Canada La Physique au Canada

Transcription

The Bulletin of
The Canadian Association
of Physicists
Vol. 39 No. 1
January 1983
Bulletin de
l'Association canadienne
des physiciens
Vol. 39 N° 1
Janvier 1983
Canada
La Physique
au Canada
Inside
Congress 83 Poster FESTIVAL
Séances de démonstration
au Congrès 83
STIONNAIRE —
irectory of Canadian
Physicists
Répertoire des
physiciens
canadiens
LU<
o
0.0-
al
co
introducing
the
TN-7200
Multichannel Analyzer
the most sought-after features...
at the lowest possible price!
...with the quality expected from
TRACOR NORTHERN.
• Wilkinson-type 50MHz ADC:
built-in analog-to-digital converter
accurately digitizes pulses, AC signals
and DC levels for pulse height
analysis applications.
• Multichannel Scaling (MCS): highspeed pulse counting of frequencies
up to 10 MHz with channel dwell
periods as low as 10/us. TTL
compatible signals available for
synchronization with external
laboratory devices (e.g. mass
spectrometers).
Unquestionably the leader in innovative
design, Tracor Northern has applied the
very latest of technological advance
ments in producing the TN-7200
Multichannel Analyzer. Dual microprocessor controlled, the TN-7200
easily performs complex data processing functions, provides an informationpacked CRT display, performs precision
pulse height analysis and multichannel
scaling. All this at an unbeatable low
price . . . and with absolutely no
compromise in quality.
tf Allan Crawford
13 Associates Ltd.
Toronto 416/678-1500, Montreal 514/731-8564
Vancouver 604/294-1326 Ottawa 613/722-7682
• High Resolution: 2048 or 4096
data channels provide the high
resolution required for Nuclear or
X-ray spectroscopy using Intrinsic
Ge.Ge(Li) or Si(Li) detectors.
• Data P r o c e s s o r Functions:
performs spectrum stripping, smoothing, and add/subtract/multiply/divide
by constants. Two-point digital calibration automatically converts channel
number to read out as energy units,
mass, time, position, etc.
• Standard RS-232 Compatible
Serial ASCII I / O Port: can
interface to a wide variety of
hardcopy terminals. Optional IEEE488 interface easily connects to most
desk-top calculeitors and business
computers.
• Optional R e m o t e Control:
virtually all MCA functions may be
controlled by a remote teleprinter or
computer using the RS-232 Serial
ASCII I/O port: or IEEE-488
interface. These operations include
defining/start/stop data acquisition,
defining regions-of-interest and
transfer of all data or selected data.
• Portability: rugged construction,
small physical dimensions (8Vz" x
11" x 15"), light weight (20 lb.), and
a recessed carrying handle make the
TN-7200 ideal for portable
applications.
• Multiple Regions-of-Interest:
simultaneous display of up to ten
ROI's with two levels of intensification. Gross and net integral
calculations are performed
automatically.
la©®1 Northern
The TN-7200 features a 5" CRT, unmatched
in clarity, brightness and amount of displayed
data . . . superior :o any display offered with
any analyzer in this category.
You can multiply the
capabilities of the ND66
Multichannel Analyzer
You begin with a costeffective, basic system
designed to meet current
budget and application
requirements, and add
memory, ADC's, data
I/O and processing
firmware as your needs
change Each system
addition multiplies your
data acquisition and
processing capabilities
No other system offers
the performance and
potential of the ND66
Ask for information
on the ND66 and the
other members of the
Nuclear Data Family
of Sixes
Go
Save
Rely
Multiply
Correlate
Solve
Achieve
The ND620 Dual
Parameter Multichannel
Analyzer correlates data in
both single and dual parameter experiments. It offers
4096 or 8192 data channels
with dual parameter configurations from 8192 x 1 to
1 x 8192 Display capabilities
include: contour display with
selectable threshold, isometric (3 dimensional) display: full 360° rotation of
the isometric (contour)
plane about the Y-axis;
± 9 0 ° tilt of dual parameter
display about an axis; and
optional digital gate list/sort
firmware.
Multiparameter analysis
and correlation of data
offers many new and exciting opportunities in scientific research. Ask for information on the ND620 and
other Nuclear Data Multiparameter Systems
Set the Nuclear Data
Family of Sixes apart
from all other multichannel analyzer systems.
Never before has the
vast spectrum of user
requirements been
covered so completely
by a single family of
systems Each system
offers unique, costeffective performance
characteristics, yet each
is common to all others
in reliability, human
engineering and modern
technology
Ask for complete
information on the family
of MCA's designed to
help you select the exact
system to meet your data
acquisition, display and
processing requirements
Nuclear Data Inc
Nuclear Data Inc
Instrumentation Division
Golf and Meacham Roads
Schaumburg. Illinois 60196
Tel: 312-884-3621
Golf and Meacham Roads
Tel 312-884-3621
Nuclear Data Inc
Golf and Meachum Roads
Tel: 312-884-3621
• ® 5:5 Technical Marketing Associates Limited
Head Office: 6620 Kitimat Road, Unit 6, Mississauga, Ontario L5N 2B8
Telephone: (416) 826-7752
Corporate Members/Membres Corporatifs
Canadian Association of Physicists
Association Canadienne des Physiciens
The Corporate Members of the Canadian Association of
Physicists are a group of corporations, laboratories and institutions who through their membership support the educational
activities of the Association.
Les M e m b r e s c o r p o r a t i f s de l'Association C a n a d i e n n e des
Physiciens sont un groupe de corporations, laboratoires ou
institutions qui supportent financièrement les activités éducatives
de l'Association.
The entire proceeds of corporate membership contributions are
paid into the C A P Educational Trust Fund and are tax deductible.
Les revenus de leurs contributions déductibles aux fins d'impôt
sont entièrement versés au Fonds Educatif de l'ACP.
A L L A N C R A W F O R D ASSOCIATES L I M I T E D
ANATEK ELECTRONICS LIMITED
AECL MEDICAL PRODUCTS
APTEC ENGINEERING LIMITED
BELL-NORTHERN RESEARCH LIMITED
CAE ELECTRONICS LIMITED
CANADIAN GENERAL ELECTRIC COMPANY LIMITED
COMPUTING DEVICES OF CANADA LIMITED
C T F SYSTEMS L I M I T E D
DATACOMP ELECTRONICS LIMITED
EALING SCIENTIFIC LIMITED
EDWARDS H I G H VACUUM (CANADA) LIMITED
ELECTROVERT LIMITED
GLENAYRE ELECTRONICS LIMITED
G U L F OIL C A N A D A LIMITED
I N S T I T U T D E R E C H E R C H E DE L ' H Y D R O - Q U É B E C
LINEAR T E C H N O L O G Y I N C O R P O R A T E D
LUMONICS RESEARCH LIMITED
MITEL SEMICONDUCTOR LIMITED
MOLI ENERGY LIMITED
MPB T E C H N O L O G I E S I N C O R P O R A T E D
ONTARIO HYDRO
POLYSAR L I M I T E D
RADIONICS LIMITED
SPAR A E R O S P A C E L I M I T E D
SST S C I E N T I F I C C O N S U L T A N T S I N C O R P O R A T E D
UN1ROYAL L I M I T E D
XEROX RESEARCH CENTRE OF CANADA LIMITED
M c G I L L UNIVERSITY
Q U E E N ' S UNIVERSITY
UNIVERSITY O F W A T E R L O O
The Canadian Association of Physicists cordially invites interested
corporations and institutions to make application for Corporate
membership and will welcome the inquiries addressed to the
Executive Secretary.
L'Association Canadienne des Physiciens invite cordialement
corporations et institutions à faire partie des Membres Corporatifs.
Renseignements auprès du Secrétaire Exécutif.
CANADIAN ASSOCIATION O F P H Y S I C I S T S / A S S O C I A T I O N CANADIENNE D E S PHYSICIENS
151 Slater, Suite 805
Ottawa, Ontario K I P 5H3
Physics in
Canada
La Physique
au Canada
The Bulletin of
The Canadian Association
of Physicists
Vol. 39 No. 1
January 1983
Bulletin de
l'Association canadienne
des physiciens
Vol. 39 N° 1
Janvier 1983
EDITORIAL BOARD/COMITE DE REDACTION
E d i t o r / R é a c t e u r en chef
J. Rolfe
Bank of C a n a d a , 234 Wellington St., O t t a w a , O n t a r i o
(613) 563-8904
Kl A 0 G 9
Associate E d i t o r / R é d a c t e u r Associé
M.L. Jento
Managing/Administration
Book Review E d i t o r / R é d a c t e u r à la critique des livres
J.P. Svenne
Dept. of Physics, University of Manitoba,
Winnipeg, M a n i t o b a R3T 2N2
(204) 474-9856
Laurent G. Caron
Département de physique. Université de Sherbrooke,
Sherbrooke, Québec J I K 2R1
(819) 565-3587
R. Fraser Code
Physics D e p a r t m e n t , University of T o r o n t o ,
Erindale Coll R 4039, M I S S I S S A U G A , Ontario L5L IC6
(416) 828-5353
G.A. Daigle
Conseil national de recherches du C a n a d a , Di'
O t t a w a , Ont.
(613) 993-2840
de physique,
Elmer H. Hara
Department of Communications,
R o o m 1648, J o u r n a l Tower N o r t h ,
300 Slater Street, O t t a w a
K1A0C8
(613) 593-6460
John A. Nilson
Lumonics Inc.
105 Schneider Rd. K A N A T A (Ottawa), O n t .
(613) 592-1460
K2K 1Y3
TABLE O F C O N T E N T S / S O M M A I R E
Letter f r o m the President
Teaching the Acoustics of Music
by W.E. Baylis
C A P C o r p o r a t e Members Conference
La chimie laser rencontre de la théorie et de l'expérience
par André D. Bandrauk
Directory of C a n a d i a n Physicists
Répertoire des physiciens canadiens
Congrès 1983 Congress, Victoria, B.C.
C A P Poster Festival/
Festival de séances de démonstration de l ' A C P
Call for Abstracts/Appel de résumés
Sample A b s t r a c t / R é s u m é type
General Information/Renseignements généraux
Registration form/Formule d'inscription
Abstract f o r m s / F o r m u l e s de résumé
A c c o m m o d a t i o n f o r m s / F o r m u l e s de logement
Subject Index for A b s t r a c t s / C o t e du sujet des résumés
Cartoon
Ph.D. Degrees in Physics Awarded at
C a n a d i a n Universities in 1982
Doctorats décernés en physique dans les
universités canadiennes, 1982
News/Nouvelles
Canadian Physicists/Physiciens canadiens
Calendar/Calendrier
Books Received/Livres reçus
Book Reviews/Critiques des livres
Advertising Rates
Canadian Association of Physicists
Association Canadienne des Physiciens
Suite 805, 151 Slater Street
Ottawa, Ontario KIP 5 H 3
Phone: (613) 237-3392
®Canadian Association
of Physicists/Association
3
5
6
9
13
14
15
16
Centre
19
19
20
22
24
24
25
26
Front Cover:
The musical score is the first page of Invention # 3, in D - m a j o r , of the twopart inventions of J.S. Bach. Superposed on this is the waveform of a
composite tone made up of D 4 , F 4 # and A 4 pure tones, which constitute
the D - m a j o r triad. See the extended book review by W.E. Baylis on p. 3.
S U B S C R I P T I O N R A T E / A B O N N E M E N T PAR AN $10.00
ADVERTISING, SUBSCRIPTIONS, C H A N G E O F ADDRESS
PUBLICITÉ, ABONNEMENT,
C H A N G E M E N T D'ADRESSE:
2
Full page
Half page
Q u a r t e r page
Fourth Cover
Second & Third Cover
Single Issue
$450.00
325.00
185.00
550.00
500.00
One-year Contract
(6 issues)
$375.00
270.00
165.00
460.00
420.00
Colour, $150.00 each additional colour; Bleed, $120.00
Typesetting and art time extra
Deadline for copy — 15th of previous month
Published — Jan., March, May (Congress), July, Sept., Nov.
canadienne
des physiciens
Second Class Mail Registration Number: 5415
1983. All rights
reserved
ISSN 0031-9147
2
Physics in Canada
Letter from the President
The present economic conditions are the worst this nation
has encountered since the depression. I'm not sure that an
end to the downturn is even in sight. What I am certain of,
however, is that when the economy turns up, physicists
active in research in universities, government laboratories
and particularly high-technology industry will play a key
role. They will provide and manage the technologies that
will help fuel the recovery.
Those physicists will be drawn from students now
p r o g r e s s i n g t h r o u g h our s e c o n d a r y s c h o o l s and
universities. It seems worthwile to examine how we are
encouraging the choice of physics as a career among our
young people and how we encourage excellence.
Our student members are doing an excellent job of
promoting the cause of physics. I had the pleasure recently
of attending the student Undergraduate Physics Conference
in Victoria. The organization was superb. The undergraduate papers were of a calibre one would expect at the
graduate level. Over one hundred undergraduates from
every part of the nation attended. Last year's conference at
Queen's was also excellent and well attended. Next year's
conference at Toronto is already being organized. Our
young students are providing excellent leadership and
initiative in building our profession.
The Association's major activities in promoting the choice
of physics as a career are the CAP Lecture Tours and the
University and High School Physics Prize Examinations.
The examinations are particularly effective in encouraging
the study of physics and identifying outstanding students.
The setting and marking of the exams is a time consuming
task that has been carried out by members of the
Association with enthusiasm and dedication each year. I'm
pleased to report to you that the ETF Trustees have
authorized, and the Council has approved, increases in the
exam prizes to compensate for the loss in real value over the
twelve years since they were last adjusted.
Even allowing for this increase, the Association's total
investment in encouraging physics as a profession amounts
to only $14,000 in 1983. That money comes mainly from
the ETF, which depends on donations from members and
the membership fees of our Corporate Members.
If we are to do an effective job of encouraging the
development of physics in this country we must at least
equal, and if possible, better our investment in the future
through the Educational Trust Fund. I encourage each
individual and corporate member to support the ETF this
year.
La Physique au Canada
3
Teaching the Acoustics of Music
by W.E.
Bay Iis. University
of
Windsor
Courses in physics for music s t u d e n t s ' have become increasingly
p o p u l a r during the past decade or so. Just how popular is indicated
by the wide selection of texts now available in a field where only a
few years before there was practically no choice: in the early 70's
one used the text by J. Backus 2 , p e r h a p s supplemented by j o u r n a l
articles' and reprints of historical m o n o g r a p h s . F o u r recent
additions to the present choice of texts f o r m the subject of this
extended review:
M U S I C A L A C O U S T I C S : AN I N T R O D U C T I O N , By D.E.
Hall. W a d s w o r t h . 1980; pp. xii + 516. Price: U.S. $21.95.
PHYSICS A N D MUSIC: T H E SCIENCE O F MUSICAL
S O U N D , by H E. White and D . H . White. H o l t . Rinehard and
Winston, 1980; pp. xvi + 432. Price: C a n . $38.40.
and the Whites. Hall has the largest selection of problems and the
most emphasis on applications to music. In ai'dition, he and Berg
and Stork suggest a n u m b e r of imaginative but practical projects.
The Whites also suggest some projects, but m a n y of these require
m o r e machine-shop work than most arts students will want to
tackle. Both Rossing and Hall give summaries of each chapter as
well as glossaries of i m p o r t a n t terms. Rossing includes a glossary
with each chapter; Hall collects terms into a single glossary at the
end of the book. Hall's brief discussion of relevant literature for
each chapter and the a n n o t a t e d lists of Berg and Stork may entice
m o r e students into the library stacks in search of f u r t h e r resources
than Rossing's m o r e complete, but u n a n n o t a t e d bibliographies,
and they will certainly be more effective than the Whites' single
short bibliography for their entire book.
Physics Presentation
T H E S C I E N C E O F S O U N D , by T . D . Rossing.
Wesley, 1982; pp. xviii + 638. Price: C a n . $29.95.
Addison-
Rossing and the Whites have followed the traditional f o r m a t used
by Backus: the basic physics of elementary mechanics and wave
motion is reviewed and then applied to acoustical topics of musical
T H E P H Y S I C S O F S O U N D , by R.E. Berg and D . G . Stork.
interest. (In the text by the Whites, much of the basic physics is
Prentice-Hall, 1982; pp. xiv + 370. Price: U.S. $22.95.
relegated to the appendix). Hall, on the other h a n d , has successfully integrated the basic physics into the " s p i r a l " structure of his
All f o u r texts are well illustrated, contain a wealth of interesting
presentation. By the term " s p i r a l " he refers to discussions of the
i n f o r m a t i o n , and are written for arts students with no b a c k g r o u n d
production, p r o p a g a t i o n , and perception of sound on different
in physics and little proficiency in mathematics. T h e book by
D o n a l d Hall is the m o s t
levels of increasing depth and
musically oriented of the lot:
s o p h i s t i c a t i o n . I find this
Hall's musical training* has
structure works well in main"Mathematics
is music for the mind;
evidently m a d e him sensitive
taining interest and motivation
to musical details sometimes
for classes with heterogeneous
Music is mathematics
for the soul"
overlooked by o t h e r authors.
preparation: students knowlThe text by White and White
edgeable in physics are not so
is the most traditional, using
This q u o t e f r o m the b o o k by D.E. Hall illustrates the affinity
bored and those with weak
illustrations
of
acoustic
often noted between physicists or m a t h e m a t i c i a n s and music. In
science b a c k g r o u n d s not so
demonstration
equipment
this issue, we publish an extended book review on Musical
easily frightened by Hall's
c o m m o n 30 and m o r e years
Acoustics. T h e timeliness of the subject was recognized by the
spiral a p p r o a c h as by the
ago but devoting relatively
C . A . P . in scheduling an invited talk at its 1981 annual meeting.
traditional f o r m a t .
little space to the acoustics of
O u r t h a n k s are extended to Dr. W.E. Baylis of the University of
musical instruments (about
Windsor, w h o has taught musical acoustics for several years, for
Berg and Stork have simply
80 pp. c o m p a r e d to 130 in the
volunteering to write this review.
omitted much of the basic
Berg and Stork book and
physics. Not only have the
Occasionally, the b o o k review editor receives, over a short period
almost 200 in the Hall and
a u t h o r s apparently failed to
of time, a n u m b e r of b o o k s on a particular subject, or closely
Rossing texts). The v o l u m e
make any reference to Newrelated ones. It seems a p p r o p r i a t e then to publish an extended
by T h o m a s Rossing, w h o is
ton's laws or to the vector
book review, which not only discusses the latest b o o k s on the
an active researcher in musical
addition of forces, displacesubject, but also provides a brief s u m m a r y of the state of the art.
acoustics as well as an amateur
ments, or velocities, but also I
Such an extended review on Solitons a p p e a r e d in the book review
percussionist and c o n d u c t o r ,
can find no definitions of
section of the N o v e m b e r 1981 issue. U n d o u b t e d l y the occasion
is the most technical of the
w o r k , energy, or power in
will arise in the f u t u r e for similar extended reviews, and we
four. Rossing advocates its
their book. Their brief discuswelcome contributions from o u r readers.
use in courses on high fidelity
sion of d r i v e n o s c i l l a t o r s
J.P.S.
and electronic s o u n d and on
(p. 12) concentrates on an
general introductory acousimpulsively driven p e n d u l u m
tics (speech, audiology, a n d technology), as well as on musical
and muddles questions of the relative phase of the oscillator with
acoustics. T h e contribution by Berg and Stork is unusual in prerespect to the force. Natural or normal modes of resonance are
senting i n f o r m a t i o n a b o u t the historical development of musical
not defined and their very basis seems confused by the a u t h o r s '
i n s t r u m e n t s and their acoustical properties.
discussion (p. 13) of a "different type of resonance, called a
Questions and Projects
In an i m p r o v e m e n t over Backus' text 4 , all f o u r of the new b o o k s
provide useful discussion questions and problems at the end of
most chapters, with answers t o selected problems given by Hall
*He is a p e r f o r m i n g organist with an M.A. in Music as well as a P h . D . physicist.
coupled or coupling resonance. . . " (i.e. the motion of coupled
oscillators). On the other h a n d , ten pages are devoted to the
D o p p l e r effect and shock f r o n t s without a hint at applications
to music.
4
Physics in Canada
Research in Musical Acoustics
Musical acoustics is a complex interdisciplinary field. Real musical
instruments are not well a p p r o x i m a t e d by idealizations such as
flexible strings and h o m o g e n e o u s pipes, and trained musicians are
often sensitive t o subtle effects which are difficult t o measure or
calculate. F u r t h e r m o r e , there is a long tradition of folklore a m o n g
p e r f o r m i n g musicians, some of which is almost certainly nonsense,
some of which involves contentious issues in psychology or
physiology 5 , b u t m u c h of which has a s o u n d historical and scientific basis. It seems wise t o tread cautiously on such d a n g e r o u s
terrain and to point out that scientific conclusions are not infallible,
but are subject to h u m a n and instrumental limitations, a n d that
m a n y i m p o r t a n t areas in musical acoustics are being actively
investigated.
O n e researcher w h o has been responsible for significant improvements in our understanding of the acoustics of musical instruments
is A r t h u r H . Benade. His b o o k , Fundamentals
of
Musical
Acoustics6, can be strongly r e c o m m e n d e d as s u p p l e m e n t a r y reading with any of the f o u r texts reviewed here, not only as a source of
i n f o r m a t i o n , but also for a lively sense of discovery in current
acoustics research. Benade's influence is seen clearly in the inputimpedance curves a n d vibration " r e c i p e s " in b o t h the Hall a n d
Rossing texts and in the discussion, especially by Rossing, of cutoff frequencies. The Whites also m a k e frequent references to
Benade's b o o k , but in spite of a clear discussion of impedance in
strings, m a k e n o application of the concept to air columns. Even
Hall a n d Rossing miss the golden o p p o r t u n i t y of explaining the
frequency dependence of sound-wave reflections in the bells of
brass instruments in terms of the changing wave impedance, a n d
only Hall makes use of Benade's "regimes of oscillations" to
explain s o m e intonation problems in wind instruments. On the
other h a n d , only Rossing properly emphasizes the i m p o r t a n c e of
Helmholtz-resonator-like flow control for the flute, one of
Benade's specialities. Berg and Stork also frequently refer t o
Benade, but m a k e little use of his contributions. Except for mentioning impedance matching in their discussion of brass-instrument
bells (p. 289) a n d f o r the use of impedance in electrical circuits,
where (p. 170) it is defined to be resistance (!), these a u t h o r s
neglect the valuable concepts of impedance and cut-off frequency.
There are n o input-impedance curves ( " r e s o n a n c e curves") f o r
real instruments anywhere in their b o o k and their description of
where in a flared brass-instrument bore waves of various modes
are reflected (p. 293) is entirely b a c k w a r d s (compare, for example,
Fig. 13-8 in Hall's b o o k ) .
Controversies
As in any active and difficult field of research, differences of
opinion occasionally occur, and although there is little question
a b o u t the n a t u r e of brass-instrument modes, some controversies
are evident in the texts. F o r example, there presently a p p e a r to be
real disagreements a m o n g some acousticians a b o u t the acoustical
significance of vent holes in timpani a n d the importance of the
Bernoulli effect in the action of the vocal cords (compare Hall's
and Rossing's treatments).
A less controversial subtlety involves the dependence of timbre on
the bowing position in stringed instruments and its inconsistency
with the idealized model of the bowed string of Helmholtz. Hall
(p. 225) points out that Schelling 7 has discussed these problems,
whereas Rossing (p. 172) presents both the Helmholtz motion and
the dependence of timbre on b o w placement as fact without hinting
at the implied contradiction. T h e Whites d o not discuss the overall
motion of the bowed string and incredibly even omit mention of
the dependence of loudness on b o w placement. Berg and Stork
show Helmholtz-type wave motion, but after stating that Fourier
analysis is not possible with such motion (p. 307) they then proceed to analyse the motion as though it were that of a plucked
string!* A n o t h e r example is the contradiction of the WeberFechner " l a w " of psychophysics (that sensory response in animals
is p r o p o r t i o n a l to the logarithm of the physical stimulus) by the
observation that over m a n y orders of m a g n i t u d e visual and
auditory response ( " b r i g h t n e s s " or " l o u d n e s s " ) is approximately
doubled for every factor of ten increase in the incident power. Hall
points o u t that the " l a w " is not even approximately true, whereas
Rossing states that it is only a rough a p p r o x i m a t i o n . T h e
Whites, on the other hand, state the " l a w " and follow it immediately
by a discussion of recent measurements as though there were
actually n o contradiction. Berg and Stork d o not mention the
Weber-Fechner " l a w " .
Errors and Omissions
M i n o r errors in all the texts can help students develop a healthy
scepticism, even with respect to physics b o o k s . F o r example, in
Hall's a n d Rossing's pictures of trombone-slide positions, the
outer slide would detach f r o m the inner sleeve at a b o u t sixth
position, whereas Berg and Stork show a strange-looking t r o m bone, which — contrary to the figure caption — shows the distance
between 6th and 7th position to be the same as between 1st and
2nd. Rossing's picture of the harpsichord action has the wire
apparently passing through the plectrum, Hall's oboe reed looks
strange indeed, and the drawing by Berg and Stork (Fig. 8-3) of
intensity rise and fall in a reverberent r o o m , is quite impossible.
In the photographic montages or drawings of instruments the
oboe seems to have practically the same length as the bassoon
(Rossing), the English h o r n (Whites), and the rackett (Berg and
Stork). These problems and the n u m e r o u s errors in the Whites'
chart of instrument ranges, are simply a result of sloppy illustrations. More amusing than serious are the Whites' consistent
misspelling of the bass b a r in stringed instruments as " b a s e b a r "
(a viol error!) and their title "Perception of lousness" (p. 125),
Rossing's error in the stated range of the bass t r o m b o n e and his
equation for the inharmonic resonant frequencies of a real string
f r o m which f,
f,, Hall's a p p a r e n t confusion over which part of
a d o u b l e French h o r n sounds when the thumb-valve trigger is
squeezed, and the mix-up by Berg a n d Stork a b o u t which part of a
d o u b l e h o r n sounds higher, their statement that the inch is
" a p p r o x i m a t e l y " equal to 2.54 cm, and their d e m o t i o n of master
court flutist and acoustician Theobald Boehm to a m a t e u r status.
More serious, in my view, particularly f o r arts students taking
their only physics course, is the use by all a u t h o r s of some unitdependent formulas such as the a p p r o x i m a l i o n for the reverberation time T r in a simple room of volume V and a b s o r p t i o n A
T R = 0.16 V / A (only in SI units)
(Berg and Stork use only the equivalent f o r m u l a for units of feet
and seconds), when the correct inclusion of the dependence on
the velocity of s o u n d v, namely
T r = 55.2 V / ( v A )
gives a properly dimensioned equation which may be used with
any consistent set of units. Also serious is an impairment of the
i m p o r t a n t concept of Fourier analysis by Rossing's waveform
spectra (p. 115) in which the vertical axes are both unlabelled and
unsealed, but a p p e a r to use different logarithmic scales for different waveforms. F u r t h e r m o r e , a c o m p a r i s o n of Rossing's plot of
" a m p l i t u d e " (unsealed, but evidently neither linear nor logarithmic) versus frequency for transverse displacement
of a plucked
string (p. 169) with a logarithmic plot of the amplitude of the
force exerted on the bridge by a bowed string (p. 175) may be confusing since, as left unexplained by Rossing, you pick u p an extra
factor n in going f r o m displacement amplitudes to force-on-thebridge amplitudes. On p. 223, Rossing also c o m p a r e s inputimpedance curves with a confusing mix o f ' l i n e a r a n d logarithmic
scales. Hall's tactic of plotting m o d e energy levels versus frequency
•Analysis of the ideal Helmholtz motion gives all string amplitudes proportional to ii2, where n is the harmonic number, regardless of bowing position
Plan to attend the CAP Corporate Members Conference
on 'Technical Training — The Challenge Ahead'
Wednesday, April 27, 1983
Skyline Hotel, Toronto
Canada, along with many other countries, is looking for a major economic impact from
its high-technology industries in the future. If this is to happen here, we must have the
skilled and creative labour force available in the important technical areas. This conference
will examine the future needs and the methods by which they can best be met.
Speakers will include:
P.A. Lapp, President,
Association
C . M . M a c N a b b , President,
P . M . M e i n c k e , President,
of Professional
Natural
University
Sciences
of Prince
avoids the conversion problem. The Whites, on the other hand,
say no more about bowed-string spectra than that they differ
from plucked- and struck-string spectra and, as mentioned above,
the analysis by Berg and Stork of bowed-string motion is badly
flawed.
A number of other omissions and errors may be mentioned: The
Whites skip over a number of important topics such as multiple
decay and after-sound in piano tones and the difference between
the soft pedal of an upright piano and the una corda pedal of a
grand and include a rather embarrassing and unrealistic assignment of absolute intensities to the musicians' dynamic markings
ff, f, mf, etc. Rossing, who generally covers the acoustics of
musical instruments much more thoroughly, has omitted any
mention of pedal tones in brass instruments. Berg and Stork
mention pedal tones but not that they are stabilized at a different
pitch than that of the lowest resonance. The omission is symptomatic of a more general malady: Berg and Stork confuse the
harmonic structure of a steady tone with the acoustic resonances
of an instrument. They write in several places about the harmonic
structure of a musical instrument (for example, on pp. 109, 289,
295) and even discuss the inharmonicity of "harmonics" in a piano
string (p. 104). Since students frequently stumble on just this
point, it is a shame the authors were not more careful. More surprising, however, are other errors by Berg and Stork: for example,
they erroneously assert that "any section of a cone" has a harmonic
resonance structure while denying such a structure to the resonances of the Bessel-horn dual of the nearly completed cone*.
Recommendation
The acid test for any text comes only when it is implemented in
classroom instruction. After two years of its use in a two-semester
course on the acoustics of music at the University of Windsor, I
find the text by Hall serves very well in spite of a few problems,
such as those mentioned above. His is the only one of the four
texts to discuss articulation of musical instruments and its effect
on loudness, or to use any of Jurgen Meyer's radiation patterns 8 ,
although he could well have used them for winds as well as strings.
I also like Hall's use of boxes for supplementary material. Only
Engineers
and
of
Engineering
Edward
Ontario
Research
Council
of
Canada
Island
Hall and Berg and Stork discuss the important topic of unequal
circulating temperaments or even list approximate pitches of some
harmonic series, but the presentation by Berg and Stork suffers
from its failure to use "cents" or "schismas" and from the occasional confusion of syntonic ("Didymean") and ditonic ("Pythagorean") commas (for example, see the caption to their Fig. 9.7).
An Instructor's Guide is available for use with Hall's book, and
Hall will record "Sound Examples for Musical Acoustics" on
your tape for a nominal fee to cover postage and handling. The
recording contains many useful demonstrations including instrument sounds played backwards, examples of multiphonics, and
stepwise ascending and continuously descending Shepard scales.
Rossing has also prepared a teaching guide which describes over
200 demonstration experiments, as well as films, records, and
tapes, and Berg and Stork promise a set of videotapes, " D e m o n strations in Acoustics", as a companion to their text.
For courses on musical acoustics I would strongly recommend
Hall's book. Rossing's new text should also be given serious
consideration, especially for acoustics courses aimed at students
with some background in science or engineering.
References
1. See, for example. Physics in Canada 37, No. 3, p. 38 and Am. J. Phys.
43, 755 and 944 (1975), 44, 240 (1976).
2. J. Backus, The Acoustical Foundation of Music, second ed. (W.W. Norton. New York, 1977).
3. See The Physics of Music, Readings from Scientific American, Intro, by
C.M. Hutchins (W.H. Freeman, San Francisco, 1978).
4. Backus now supplies a separate problems booklet for use with the text
(J.P.S.).
5. J.G. Roederer, Introduction to the Physics and Psychophysics of Music,
second ed. (Springer-Verlag, New York, 1975).
6. A H. Benade, Fundamentals of Musical Acoustics (Oxford University
Press. New York, 1976).
7. J. Schelling, Scientific American, January 1974, p. 87 and Journal of
the Acoustical Society of America 53, 26 ( 1973).
8. J. Meyer, Acoustics and the Performance of Music (Verlag Das
Musikinstrument, Frankfurt. 1977).
*The calculation of resonant frequencies for such simple bores is a relatively easy physics problem.
5
6
Physics in Canada
La chimie laser rencontre de la théorie et de l'expérience
par André D. Bandrauk*,
Département
de chimie, Université de
Sherbrooke
Introduction
« Un aspect particulièrement attrayant pour la chimie émane des
études récentes sur les réactions chimiques en présence de rayonnement laser — à savoir, la réalisation de la possibilité d'une
nouvelle chimie réalisée et contrôlée par les lasers »'. Cette
déclaration de l'éminent théoricien chimiste, K. Fukui, Prix Nobel
de chimie en 1981, annonce une relance intensive des recherches
expérimentales et théoriques en dynamique moléculaire et surtout
un intérêt croissant pour les réactions chimiques alimentées par
des lasers accordés à des absorptions moléculaires spécifiques à
chaque molécule. Les lasers d'aujourd'hui rendent possible l'excitation des états électroniques et vibrationneles d'une molécule
d'une façon beaucoup plus sélective qu'autrefois. Si on arrivait
à exciter spécifiquement un mode vibrationnel qui correspondait
à la coordonnée de réaction, une réaction dite « mode-sélective »
serait réalisée si le temps de réaction s'avérait plus court que les
processus de redistribution (relaxation) de l'énergie intramoléculaire. Un exemple de cette redistribution qui donne lieu à une
dissociation est illustrée à la figure 1. Les travaux théoriques qui
ont trait aux réactions sélectives ont bifurqué dans deux directions : l'une concerne la nature de Yergodicité en dynamique
intra-moléculaire et l'autre porte plutôt sur la dynamique des
réactions. Ces travaux touchent à la fois les grandes questions sur
la nature de la stochasticité des systèmes moléculaires et sur le
comportement des molécules en présence de rayonnement intense.
En effet ces questions intéressent les physiciens autant que les
chimistes ; il n'est pas surprenant de voir de plus en plus paraître
dans les revues physiques le mot chimie laser, témoignant ainsi
de l'artificialité des barrières souvent érigées entre les disciplines
diverses en sciences 2 " 3 .
Du côté historique, citons la découverte par un groupe canadien
de l'Université de Waterloo 4 , se servant d'un laser C 0 2 (développé
à Val Cartier au Québec), que l'on pouvait dissocier par l'action
du champ laser intense des molécules telle que SF 4 en fragments
électroniquement excités. Cette découverte de 1973 déclencha une
activité fébrile surtout dans les groupes de Bloembergen aux
É.-U. 2 et de Letokhov en URSS 3 . Au début, l'emphase a été sur
les lasers infrarouges avec l'espoir de sélectivement séparer les
isotopes atomiques par dissociation moléculaire. Aujourd'hui, des
études poussées se poursuivent dans plusieurs laboratoires sur le
comportement et la réactivité des molécules en présence de
lasers visibles et u.v. 2 en vue d'explorer la possibilité de réaliser de
nouvelles synthèses en chimie. Récemment, le groupe de P. Hackett
au CNRC a réussi la production sélective par laser de la vitamine D 5 .
Dans un domaine nouveau tel que la chimie laser, un expérimentateur se heurte à des questions fondamentales qui incitent les
théoriciens à relever le défi. Or, dans une molécule compliquée,
quelle liaison serait susceptible de se dissocier sélectivement? Dans
le système à trois modes de coordonnées normales Q,, Q 2 , Q 3
(fig. 1), on trouve expérimentalement que seulement un mode de
vibration (e.g. liaison C-H dans les molécules organiques) se
dissocie généralement après excitation par un champ intense. Pour
répondre aux questions de sélectivité chimique, nous devons donc
comprendre ce qui se passe dans les molécules, à savoir, comment
les liaisons « communiquent » entre elles, quels sont les états
quantiques appropriés pour décrire les molécules en présence de
champs intenses, etc. Dans cet article, nous allons résumer certains
travaux théoriques effectués par des chimistes théoriciens sur ces
questions. Ces travaux sont peut-être peu connus par la communauté des physiciens. Comme nous allons le démontrer plus
loin, les approches de la chimie théorique s'apparentent souvent à
celles de la physique théorique. Des concepts tels que stochasti*Boursier Killam (Conseil des Arts d u C a n a d a ) .
cité, ergodicité, chaos, résonance, états habillés, etc. sont monnaie
courante dans le jargon du chimiste théoricien d'aujourd'hui.
Puisque l'ordinateur assume une place de plus en plus importante
dans les recherches en chimie théorique, on peut aujourd'hui vérifier des nouveaux modèles et concepts par des calculs élaborés.
Les molécules présentent donc une classe « d'univers isolés »
dans lesquels on peut étudier rigoureusement les lois de la physique
classique et quantique. Les retombées de ces études théoriques
serviront à faire avancer plus rapidement les recherches expérimentales par l'apport d'un langage précis et des modèles utiles
pour la mise en application de ces recherches.
d) E X C I T A T I O N
PAR
b) R E D I S T R I B U T I O N
Fig. 1
UN
PHOTON fitO
D'ENERGIE
ET
DISSOCIATION
Une molécule avec trois modes vibralionels Q,, Q 2 , Q 3 . a)
Population vibrationnelle des niveaux v,, v2, v, après une
excitation par un photon d'énergie ha>. b) redistribution
d'énergie vibrationnelle donnant lieu à la dissociation du
mode Q, (continuum c) et population des niveaux v'„ v2
des modes Q, et Q 2 .
Descriptions théoriques
Ergodicité, Stochasticité — Le problème de la redistribution de
l'énergie intramoléculaire est difficile vue la diversité d'interactions
entre un grand nombre de modes anharmoniques. Il n'est pas
surprenant que les méthodes de la mécanique non-linéaire s'avèrent
indispensables dans les études théoriques en dynamique moléculaire. Or par ces méthodes, on a réussi à établir des critères pour
la description de la redistribution d'énergie en se servant des plans
de Poincaré dans l'espace de phase (impulsion & coordonnée), de
la méthode des trajectoires classiques divergeantes exponentiellement, etc., qui sont des méthodes déjà bien connues en astrophysique 6 , en physique des plasmas 7 et dans la théorie des
systèmes 8 . Dans certains cas on a retrouvé le fameux résultat de
Fermi-Pasta-Ulam sur l'excitation d'une chaîne non-linéaire, à
savoir, les systèmes non-linéaires demeurent quasipériodiques
jusqu'à une énergie critique au-delà de laquelle le système devient
chaotique (apériodique), ce qu'on appelle le régime « ergodique ».
Intuitivement, on s'attend à ce que les vibrations moléculaires
deviennent de plus en plus chaotiques quand l'énergie interne
augmente, vue la grande densité d'états. Quels sont les facteurs
qui déterminent la transition au régime chaotique? A quelle
énergie les calculs classiques et les calculs quantiques s'accordent?
En effet, une des grandes questions que l'on se pose aujourd'hui, à
l'instar de la mécanique classique, concerne la définition quantique
de l'ergodicité? Une approche est de relier la mécanique classique
à la mécanique q u a n t i q u e par la quantification semiclassique
suivant la règle de Bohr et généralisée par Einstein même,
^ p d q = (n + l / 2 ) h
(1)
où p est l'impulsion classique, q est une c o o r d o n n é e sur un chemin
t o p o l o g i q u e m e n t indépendant 9 - 1 0 , h est la constante de Planck et
n est un n o m b r e q u a n t i q u e . A h a u t e énergie, le c o m p o r t e m e n t
quasipériodique est perdu. Ceci est relié à la disparition de tori
invariants et d o n c des chemins t o p o l o g i q u e m e n t indépendants.
On a d o n c un m o u v e m e n t ergodique, et l'énergie est répartie de
façon statistique sur tous les modes. Le régime ergodique ne
semble guère favoriser la sélectivité de dissociation souhaitée p a r
les expérimentateurs.
Dynamique moléculaire — P u i s q u ' u n e molécule peut être excitée
de façon sélective par un laser, la question f o n d a m e n t a l e demeure :
est-ce que cette spécificité d'excitation sera détruite par les
processus de relaxation interne. Il semblerait, à prime a b o r d , que
même si la d y n a m i q u e intramoléculaire soit formellement ergodique ou n o n (il f a u d r a i t peut-être a t t e n d r e un temps infini p o u r
que l'ergodicité s'établisse), la spécificité de réaction d é p e n d r a
plutôt de la vitesse de transfert d'énergie interne c o m p a r é e à la
vitesse de la réaction chimique qui intéresse l'expérimentateur. Ce
point de vue est bien illustré p a r un modèle simple à deux états
d ' u n e réaction unimoléculaire. Soit la vitesse de transfert intramoléculaire entre deux états 1 et 2, ki, et les vitesses de réaction de
c h a q u e état k, et k 2 respectivement. La cinétique est schématisée
p a r les équations suivantes :
ki
1 ^ 2
k,
(la)
k,
—
1
produits
;
2
— produits
k:
(lb)
Les vitesses intrinsèques sont d o n n é e s par les valeurs p r o p r e s des
é q u a t i o n s cinétiques c o u p l é e s " ,
vitesse = h
±
2
-
k
?>2/4
.
(2)
Miller et al. obtiennent T en solutionnant l'équation de Schroedinger p a r une m é t h o d e de « scaling » c o m p l e x e " en fonction du
couplage V c . D a n s cette m é t h o d e on t r a n s f o r m e la c o o r d o n n é e
réelle x en c o o r d o n n é e complexe xe e . Les énergies propres q u a n tiques de l'Hamiltonien (3) deviennent complexes telles que données
p a r l'équation (4).
Vi (x)
Fig. 2
Barrière d'énergie V,(R) dans une décomposition unimoléculaire. La coordonnée perpendiculaire y supporte des
oscillateurs harmoniques de fréquence ai,.
Certains résultats anticipés intuitivement sont repérés. Par
exemple, l ' a u g m e n t a t i o n du couplage V c et la dégénérescence
entre certains m o d e s détruisent toute spécificité de mode. Par
contre, le degré de spécificité (ou bien sélectivité) semble être
indépendant de l'énergie, contrairement au seuil d'énergie rencontré p o u r trouver les trajectoires stochastiques du système
classique c o r r e s p o n d a n t . Or, le caractère ergodique d ' u n système
ne semble pas avoir d'influence sur les vitesses de réaction unimoléculaire. Il f a u d r a attendre des calculs plus élaborés sur des
molécules plus complexes p o u r vérifier cette observation théorique. On doit souligner que ce m a n q u e de corrélation entre
l'ergodicité d ' u n système et sa réactivité est loin d'être bien
compris.
2
k, + s/k? + (k, - k , ) / 4
Le système d a n s les é q u a t i o n s ( 1) est ergodique par c o n s t r u c t i o n , à
savoir, le système oscille entre les états 1 et 2 avec la m ê m e vitesse
kj, et d o n c , en m o y e n n e , le système est r é p a n d u également sur ces
deux états. Mais la vitesse de réaction prend la valeur statistique
'/2(k, + k 2 ) seulement d a n s la limite k, > | k , - k 2 | / 2 . D a n s la
limite contraire, k,
| k , - k 2 | / 2 , le système devient
mode-spécifique,
car la vitesse est soit k, ou bien k 2 , même si la d y n a m i q u e intramoléculaire est ergodique. On voit d o n c clairement, que q u o i q u e
la poursuite d ' u n e définition rigoureuse de la stochasticité n o u s
f o u r n i r a un concept plus raffiné, la d y n a m i q u e elle m ê m e n o u s
suggère que les temps de relaxation et les vitesses peuvent favoriser
ou détruire la spécificité i n d é p e n d a m m e n t de la nature du régime
d y n a m i q u e dans lequel se trouve la molécule.
Une étude plus a p p r o f o n d i e de cette d i c h o t o m i e dans ce c o m p o r tement moléculaire a été effectuée p a r le g r o u p e de W . H . Miller à
Berkeley 1 2 . On se sert du modèle de deux oscillateurs couplés,
d o n t l'Hamiltonien s'écrit :
H = JBL +
2m
7
+ V,(x) + Vi ma>v2y2 + V c (x,y) ,
(3)
2m
où V,(x) est un potentiel à d o u b l e barrière, fig. 2, Vc est l'interaction qui couple les deux oscillateurs. Les oscillateurs selon
l'axe x sont instables, d o n n a n t lieu à des résonances caractérisées
p a r une énergie complexe
E = Er - i T r / 2 .
(4)
La partie imaginaire ou bien la largeur P est reliée à la durée de vie
T et la vitesse de décomposition k par l'équation suivante,
k = r"1 =
r/fi .
(5)
Molécules habillées — Jusqu'ici a u c u n e allusion n'a été faite de
l'effet du rayonnement sur les états q u a n t i q u e s de la molécule ellemême. En spectroscopic a t o m i q u e , il est maintenant bien c o n n u
que les états électroniques subissent des déplacements de Stark.
En particulier, l'interaction avec un c h a m p intense peut modifier
considérablement le spectre de fluorescence. Ceci a déjà été
observé expérimentalement 1 4 et l'explication se trouve dans
l'application du modèle de l'atome habillé 1 5 . Nous nous s o m m e s
penchés récemment sur l'application de cette m é t h o d e en spectroscopic moléculaire en vue d'explorer la possibilité de prédire
les effets d ' u n r a y o n n e m e n t laser intense sur le spectre d ' u n e
molécule. Ceci n'est q u ' u n premier pas vers une c o m p r é h e n s i o n
du c o m p o r t e m e n t d ' u n e molécule dans un c h a m p intense. N o u s
espérons p a r la suite établir une corrélation plus étroite entre
l'excitation et la réactivité des molécules.
Q u a n d une molécule se trouve en interaction avec un c h a m p laser
intense, l'énergie totale initiale se définit p a r l'énergie de la molécule plus l'énergie du p h o t o n . Par conservation d'énergie, ceci doit
être égal à l'énergie finale totale. D o n c en discutant des effets
multiphotoniques, il est utile de traiter de l'ensemble du système,
molécule plus champ. D a n s cette image, l'énergie totale est
constante, et les processus m u l t i p h o t o n i q u e s deviennent des
redistributions de cette énergie entre la molécule et le c h a m p laser
(on r e m a r q u e tout de suite l'analogie avec la redistribution d'énergie moléculaire en d y n a m i q u e intramoléculaire, fig. 1). C'est ce
point de vue qui d o n n e lieu à la représentation de la molécule
habillée. En particulier, d a n s une photodissociation directe,
c o m m e illustrée p o u r la molécule Ar 2 , fig. 3, l'excitation se fait
d ' u n état électronique initial V,(R), qui s u p p o r t e des niveaux
rotationnels-vibrationnels, à un état répulsif V,(R) d o n t les
8
Physics in Canada
k; =
P;/fi
= h" 1 [2M (E - VUR)]
,
(8)
et X est un facteur de correction semiclassique entre 0 et 7r/4 17 .
N o s travaux récents n o u s o n t permis d'établir avec une précision
n u m é r i q u e dépassant de b e a u c o u p la précision expérimentale,
l'existence de ces n o u v e a u x états induits par un c h a m p laser
intense. Or nous trouvons que l'addition de plusieurs niveaux en
v ( n o m b r e q u a n t i q u e vibrationel) et J ( n o m b r e q u a n t i q u e
rotationel) est nécessaire p o u r bien définir ces nouveaux états 1 6 .
L ' i n t r o d u c t i o n d'excitations virtuelles (corrections à l'approxim a t i o n R W A ) d a n s nos calculs d ' é q u a t i o n s couplées d é m o n t r e n t
que les états virtuels influencent seulement les déplacements
d'énergie (effet Stark d y n a m i q u e ) . G r â c e à la m é t h o d e de la
molécule habillée mariée aux m é t h o d e s d ' é q u a t i o n s couplées de la
théorie de diffusion q u a n t i q u e " , nous a v o n s réalisé un premier
calcul de l'effet R a m a n r é s o n n a n t en présence d ' u n r a y o n n e m e n t
intense 1 8 . La conclusion principale de cette étude est que les interprétations spectroscopiques basées sur des facteurs de F r a n c k C o n d o n 2 0 , ne sont plus valables à des intensités de r a y o n n e m e n t
laser au delà de 109 W / c m 2 . Les renormalisations
(habillement)
des états électroniques et des fonctions nucléaires sont la règle
générale à de telles intensités. Les concepts de la spectroscopic et
de la p h o t o c h i m i e classique ne sont d o n c plus valables.
Vi(R) +tlw
Conclusion.
R (o.u.)
Fig. 3
Les trois premiers potentiels électroniques de la molécule
Ar2. L'absorption d'un photon de fréquence a> = 28 000 cnf 1
(laser à XeF) se traduit par l'intersection du potentiel habillé
V,(R) + heu avec le potentiel V 3 (R). À haute intensité, un
nouveau potentiel (adiabatique) V",(R) est créé par le champ
intense, (AJ = 0, ± 1).
f o n c t i o n s nucléaires sont continues 1 6 . Les deux états électroniques
sont couplés en présence d ' u n c h a m p laser
par l'interaction
radiative "Jul3 • l""où
est le m o m e n t de transition électronique qui dépend de R, la distance internucléaire.
D a n s la représentation de la molécule habillée, Fig. 3, le potentiel
lié V,(R) + heu (tu = fréquence du p h o t o n incident) croise le potentiel répulsif V 3 (R). L ' a b s o r p t i o n devient d o n c une prédissociation
induite p a r le c h a m p laser via le couplage radiatif V 1 3 (R) =
)ï7 3 (R) -T'6. La largeur des niveaux liés de l'état V,(R) d o n n e les
probabilités de transition au c o n t i n u u m . D o n c , si l'on peut
calculer les largeurs F r , équation (4), des niveaux de l'état fondamental, on obtient directement les probabilités de photodissociation. A très haute intensité (e.g. à I = 10'° W / c m 2 , V 13 =
280 cm" 1 , 16 ), les états électroniques sont f o r t e m e n t perturbés, de
sorte que des nouveaux états électroniques, appelés états adiabatiques,'6 sont créés p a r le c h a m p incident. Ces nouveaux états
paraissent q u a n d le n o u v e a u potentiel Vj(R) défini c o m m e
(dessiné en pointillés, fig. 3),
V;(R) = 'A [V,(R) + ho» + V 3 (R)]
+ '/2 [(V 3 (R) - V,(R) - hw) 2 + 4V, 3 (R) 2 ] 2, (6)
s u p p o r t e des niveaux rotationels-vibrationnels. La quantification
de ces niveaux a lieu q u a n d la relation semiclassique (équation (1))
est satisfaite
et) = J "
k 3 (R) d R + À' = (n + 1/2)
TT
,
(?)
où <t> est la phase de l ' o n d e nucléaire, k 3 est le vecteur d ' o n d e p o u r
V^(R),
La c o m p r é h e n s i o n de la sélectivité de r u p t u r e de liaison et des
réactions initiées p a r des lasers est en évolution constante. D a n s
ce bref résumé, nous avons souligné deux grandes questions
relevées p a r des études théoriques. Premièrement, le c o m p o r t e ment aléatoire des vibrations d ' u n e molécule excitée au régime
stochastique (ergodique) ne semble avoir a u c u n e relation directe
à la d y n a m i q u e sélective, telle que dissociation, isomérisation,
réaction. Les p a r a m è t r e s i m p o r t a n t s ne sont pas encore cernés
afin de pouvoir mettre au profit des expérimentateurs les connaissances théoriques. Finalement, nos p r o p r e s résultats théoriques d é m o n t r e n t que les états électroniques eux-mêmes sont
f o r t e m e n t modifiés par les c h a m p s laser intenses et que nos c o n cepts de la photochimie classique doivent être modifiés en
conséquence. Il nous faut des réponses précises à ces questions et
d'autres. Vu les perspectives encourageantes du côté théorique,
la chimie sélective p a r voie de laser apportera certes une révolution
d a n s b e a u c o u p d e d o m a i n e s tels que la photochimie,
la chimie
analytique et la catalyse.
Bibliographie
1. K. Fukui et al., Toward mode-selective chemical reactions, Chem.
Phys. Letters 84, 123 (1981).
2. N. Bloembergen, E. Yablonovitch, Infrared laser-induced Unimolecular Reactions, Phys. Today, May 1978, p. 23.
3. Phys. Today, Nov. 1980, Special Issue — Laser Chemistry.
4. N.R. Isenor et al., C 0 2 Laser-Induced Dissociation of SiF 4 Molecules, Can. J. Phys. 51, 1281 (1973).
5. P.A. Hackett et al., Laser Photochemical Production of Vitamin D ,
J. Am. Chem. Soc. 103, 6781 (1981).
6. N.R. Lebovitz et al., Theoretical Principles in Astrophysics and
Relativity, (University of Chicago Press, 1978).
7. H. Haken, Chaos and Order in Nature (Springer, N.Y. 1981).
8. G. Nicolis, I. Prigogine, Self-Organization in Nonequilibrium Systems,
(John Wiley & Sons, N.Y. 1977).
9. J. Eklers et al., Stochastic Behavior in Classical and Quantum
Hamiltonian Systems (Springer, N.Y. 1979).
10. M. Tabor, The Onset of Chaotic Motion in Dynamical Systems,
Advances in Chem. Phys. 46, 73 (1981).
11. J.T. Yardley, Introduction to Molecular Energy Transfer (Academic
Press, N.Y. 1980), p. 66.
12. B.A. Waite, W.A. Miller, Models of Mode Specificity in Unimolecular Reaction Dynamics, J. Chem. Phys. 73, 3713 (1980).
13. Int. J. Quantum Chem. 14, #4 (1978) — ce volume traite exclusivement de la méthode de « scaling » complexe.
suite à la page 25
9
Directory of
Canadian Physicists
Répertoire des
physiciens canadiens
Where are the physicists?
Où se trouvent les physiciens?
It is impossible at the present time to discover where most of the
physicists in C a n a d a are. We k n o w f r o m the lists of physicists w h o
have g r a d u a t e d f r o m the physics d e p a r t m e n t s in universities that
there are possibly 10,000 or even 12,000 physicists in C a n a d a . Less
than 2,000 are well identified in the C A P m e m b e r s h i p list. W h e r e
are the others? Some scientists or engineers, w h o did not initially
have a BSc in physics, became physicists by training a n d t h r o u g h
their close collaboration in Physics. H o w can we find them?
Il est présentement impossible de découvrir où se trouve la g r a n d e
m a j o r i t é des physiciens au C a n a d a . A partir des listes d ' é t u d i a n t s
ayant g r a d u é d a n s les d é p a r t e m e n t s de physique des universités
canadiennes, l'on conclut qu'il existe de 10,000 à 12,000 physiciens
au C a n a d a . Moins de 2,000 d ' e n t r e eux sont bien identifiés c o m m e
m e m b r e s de l ' A C P , mais où sont tous les autres? En plus certains
scientifiques ou ingénieurs, sans posséder un BSc en physique
devinrent plus t a r d de véritables physiciens grâce à un entraînement subséquent et leur sérieuse collaboration en physique.
C o m m e n t p o u v o n s - n o u s les trouver?
T h e answer is the p r o p o s e d Directory of C a n a d i a n Physicists.
All physicists will have the o p p o r t u n i t y to outline the main stages
of their career or at least to identify themselves in the physics
c o m m u n i t y . Y o u n g physicists could describe, for the first time,
their field of interest to the interested reader. Older physicists
could choose to describe their career, their experience in research,
teaching, industry, a d m i n i s t r a t i o n or in a n y o t h e r field that they
consider c o m p l e m e n t s their training in physics.
Please give copies of these d o c u m e n t s to any of y o u r colleagues
w h o m a y not have received them.
Le Répertoire des physiciens canadiens que nous désirons publier
est la réponse.
T o u s les physiciens a u r o n t la possibilité de présenter les
principales étapes de leurs carrières ou au moins ( n o u s espérons)
être identifié parmi les physiciens canadiens. Les jeunes physiciens
p o u r r a i e n t présenter p o u r la première fois, à tout lecteur intéressé,
leurs d o m a i n e s d'intérêt.
SVP d o n n e r des copies à tout a u t r e physicien qui n ' a u r a i t pas ces
informations.
Contents of the Directory
Contenu du répertoire
All C a n a d i a n physicists whether or not they are m e m b e r s of C A P
are e n c o u r a g e d to s u b m i t their names f o r the Directory. It would
be u n f o r t u n a t e if you were to find that y o u r n a m e is not included
in the Directory.
T o u s les physiciens canadiens, m e m b r e s ou non de l ' A C P sont
i n s t a m m e n t invités à f o u r n i r leur participation au répertoire.
N o u s regretterions que vous découvriez plus tard que vous n'êtes
pas inscrit d a n s le répertoire.
All C a n a d i a n physicists are eligible f o r inclusion free of charge.
M e m b e r s of C A P will receive a free personal copy of the Directory.
Tous les physiciens canadiens peuvent se faire inscrire gratuitement
d a n s le répertoire, en plus les membres de l ' A C P recevront un
exemplaire individuel gratuit.
T h e Directory will be divided into 5 sections:
Section I:
Section II:
Section III:
Section IV:
Section V:
Curriculum vitae of each physicist
C o m p l e t e subject index consisting of the 70 main
headings in C J P
Listing by subject index of the individuals in Section I (1st and 2nd Index choices)
G e o g r a p h i c a l — Lists of University faculty by
D e p a r t m e n t s , physicists in each industry, etc.
List of symbols
Le répertoire c o m p r e n d r a les sections suivantes.
La section I
présentera le curriculum vitae individuel de tous
les physiciens.
La section II d o n n e r a la liste complète des 70 index des matières
utilisés.
La section III p r é s e n t e r a p a r o r d r e n u m é r i q u e l ' i n d e x des
matières suivi p a r le nom des physiciens (suivi de
leurs initiales) ayant choisi cet index des matières
en premier ou second choix.
La section IV (distribution géographique) — Liste des physiciens
d a n s c h a q u e d é p a r t e m e n t de physique ou d a n s
c h a q u e industrie.
La section V présentera la liste des symboles utilisés dans le
répertoire.
10
Physics in Canada
Canadian Journal of Physics Subject Index
Index des matières du Journal canadien de physique
1.00
2.00
3.00
4.00
5.00
6.00
7.00
10.00
11.00
12.00
13.00
14.00
20.00
21.00
23.00
24.00
25.00
27.00
28.00
29.00
30.00
31.00
32.00
33.00
34.00
35.00
36.00
40.00
41.00
42.00
43.00
44.00
46.00
47.00
50.00
51.00
52.00
C o m m u n i c a t i o n , E d u c a t i o n , History, a n d Philosophy
M a t h e m a t i c a l M e t h o d s in Physics
Classical and Q u a n t u m Physics; Mechanics a n d Fields
Relativity a n d G r a v i t a t i o n
Statistical Physics a n d T h e r m o d y n a m i c s
M e a s u r e m e n t Science, G e n e r a l L a b o r a t o r y Techniques,
and I n s t r u m e n t a t i o n Systems
Specific I n s t r u m e n t a t i o n a n d Techniques of General Use
in Physics
T h e Physics of E l e m e n t a r y Particles a n d Fields
G e n e r a l T h e o r y of Fields a n d Particles
Specific Theories and Interaction Models: Particle
Systematics
Specific Reactions a n d P h e n o m e n o l o g y
Properties of Specific Particles a n d Resonances
Nuclear Physics
Nuclear Structure
Nuclear Decay a n d Radioactivity
Nuclear Reactions a n d Scattering: G e n e r a l
Nuclear Reactions a n d Scattering: Specific Reactions
Properties of Specific Nuclei Listed by Mass Ranges
Nuclear Engineering a n d Nuclear Power Studies
Experimental Methods and Instrumentation for ElementaryParticle and Nuclear Physics
A t o m i c and Molecular Physics
Electronic Structure of A t o m s a n d Molecules: T h e o r y
A t o m i c Spectra and Interactions with P h o t o n s
Molecular Spectra and Interactions with P h o t o n s
A t o m i c a n d Molecular Collision Processes and Interactions
Experimentally Derived Information on A t o m s and
Molecules; I n s t r u m e n t a t i o n a n d Techniques
Studies of Special A t o m s and Molecules
Classical A r e a s of P h e n o m e n o l o g y
Electricity a n d Magnetism: Fields and C h a r g e d Particles
Optics
Acoustics
Heat Flow, T h e r m a l and T h e r m o d y n a m i c Processes
Mechanics, Elasticity, Rheology
Fluid D y n a m i c s
Fluids, Plasmas, a n d Electric Discharges
Kinetic a n d T r a n s p o r t T h e o r y of Fluids; Physical Properties of G a s e s
T h e Physics of Plasmas and Electric Discharges
60.00
61.00
62.00
63.00
64.00
65.00
66.00
67.00
68.00
70.00
71.00
72.00
73.00
74.00
75.00
76.00
77.00
78.00
79.00
80.00
81.00
82.00
86.00
87.00
90.00
91.00
92.00
93.00
94.00
95.00
96.00
97.00
98.00
C o n d e n s e d Matter: Structure, T h e r m a l and Mechanical
Properties
Structure of Liquids and Solids; Crystallography
Mechanical and Acoustic Properties of C o n d e n s e d Matter
Lattice D y n a m i c s a n d Crystal Statistics
Equations of State, Phase Equilibria, and Phase Transitions
T h e r m a l Properties of C o n d e n s e d Matter
Transport Properties of Condensed Matter (Nonelectronic)
Q u a n t u m Fluids and Solids: Liquid and Solid Helium
Surfaces and Interfaces: Thin Films and Whiskers
C o n d e n s e d M a t t e r : E l e c t r o n i c S t r u c t u r e , Electrical,
Magnetic, and Optical Properties
Electron States
Electronic T r a n s p o r t in C o n d e n s e d M a t t e r
Electronic Structure and Electrical Properties of Surfaces,
Interfaces, and Thin Films
Superconductivity
Magnetic Properties and Materials
M a g n e t i c R e s o n a n c e s a n d R e l a x a t i o n in C o n d e n s e d
Matter: Mossbauer Effect
Dielectric Properties and Materials
Optical Properties a n d C o n d e n s e d M a t t e r Spectroscopy
and O t h e r Interactions of M a t t e r with Particles and
Radiation
Electron and Ion Emission by Liquids and Solids: Impact
Phenomena
Cross-Disciplinary Physics and Related Areas of Science
and Technology
Materials Science
Physical Chemistry
Energy Research and Environmental Science
Biophysics, Medical Physics, a n d Biomedical Engineering
Geophysics, A s t r o n o m y and Astrophysics
Solid Earth Geophysics
H y d r o s p h e r i c a n d A t m o s p h e r i c Geophysics
Geophysical Observations, Instrumentation,
and
Techniques
A e r o n o m y a n d Space Physics
F u n d a m e n t a l A s t r o n o m y a n d Astrophysics, I n s t r u m e n tation and Techniques and Astronomical Observations
Solar System
Stars
Stellar Systems: Galactic and Extragalactic Objects a n d
Systems; T h e Universe
C a n a d i a n A s s o c i a t i o n of P h y s i c i s t s / A s s o c i a t i o n c a n a d i e n n e d e s p h y s i c i e n s
151 Slater Street, Suite 805/151 Slater, Chambre 805
OTTAWA, Ontario K1P 5H3
DIRECTORY OF CANADIAN PHYSICISTS/RÉPERTOIRE DES PHYSICIENS CANADIENS
QUESTIONNAIRE
We would like to obtain all the information requested; however, feel
free to ignore any questions that a p p e a r inappropriate or that you do
not wish to answer. Please provide at least your n a m e and address.
We need to obtain from you s o m e serious indication that you are a
physicist or its equivalent (see question 6a).
The information will be published in the language used by the
respondent.
CAP reserves the right to edit information considered too long or
inappropriate.
N.B. Should there be insufficient response the Directory will be cancelled.
1.
Surname
Nom de famille
Title:
Titre:
Dr.
Q Mr.
M.
Bien qu'il soit préférable d e recevoir toutes les informations requises,
SVP d o n n e z au moins votre nom et votre adresse. Vous n'êtes évidemment pas tenu d e répondre aux questions qui vous semblent inappropriées ou que vous désirez ignorer.
Nous avons besoin que vous nous fournissiez un indice sérieux pouvant
démontrer que vous ê t e s physicien ou l'équivalent (voir question 6a).
Les informations seront reproduites d a n s la langue utilisée par le
répondant.
L'ACP se réserve le privilège d'éditer toute information jugée trop
longue ou inappropriée.
N.B. Dans l'éventualité qu'il y aurait un nombre insuffisant d'inscriptions
le répertoire devra être annulé.
2. Given name and initial
Prénom et initiale
•
Mrs.
M™
Miss r n Ms.
M"* '—1
•
Other
Autre
Address (Business)
Adresse (bureau)
Postal Code
Code postal
Telephone (Business)
Téléphone (bureau)
Area Code/Code
Number/Numéro
Local if any/Local (si c'est le cas)
6a. Where, when and which degree did you obtain in Physics or its equivalent?
Où. quand et quel degré avez-vous obtenu en Physique (ou l'équivalent)?
6b. Highest academic degrees obtained (maximum 2)
Quels sont les plus hauts grades académiques obtenus? (maximum 2)
Diplomas/Diplôme
7.
Year/Année
Field/Domaine
University/Université
Subject area as described in the subject index used in the Canadian Journal of Physics (integer value only) corresponding to your three main subfields of interest in
Physics. (See any recent December issue or copy attached)
Donnez vos 3 principaux sujets d'intérêt tel que décrit dans l'index des matières du Journal canadien de physique dans les numéros de décembre.
First index/Premier choix d'index
Second index/Second choix
Third index/Troisième choix
See other s i d e / V o i r au verso
Recent and brief career summary (in reverse chronological order)
Emplois occupés récemment (par ordre chronologique inverse)
9.
Dates
Location/Endroit
Position held/Poste occupé
Total number of publications in refereed scientific journals, books published, theses written under your direction, patents, technical reports. Specify clearly each case
where appropriate.
Nombre total de publications dans des journaux arbitrés, livres publiés, thèses rédigées sous votre direction, brevets, rapports techniques. Specifiez clairement chaque
cas lorsque approprié.
10.
Main honors, prizes, awards
Principaux prix honorifiques, médailles, etc.
Honors, etc./Prix
11a. Are you a Member of CAP
Etes vous un membre de l'A.C.P.?
Yes
Oui
11b. If no, have you been a Member?
Si non, avez-vous déjà été membre?
Yes
Oui
Given by/Offert par
Nn
Non
Date
(year joined if known)
(année d'adhésion si connue)
Nn
Non
11c. Have you held any office in CAP?
Avez-vous occupé un poste dans l'A.C.P.?
Indicate which ones:
Indiquez lequel:
Councillor/
Conseiller
Yes _
Oui
. No _
Non
Chairman of division
Président de division
Yes
Oui
. No _
Non
Other
Autre
12.
Describe your work in less than 30 words in the space below or give key words.
En moins de 30 mots, décrivez vos travaux dans l'espace ci-dessous, ou bien donnez des mots clefs.
13.
Please sign below to indicate your agreement to publication of this information in the Directory.
Votre signature indiquera votre approbation de publier ces informations dans le répertoire des physiciens canadiens.
Signature
CAP
POSTER
FESTIVAL
FESTIVAL DE SEANCES
DE DÉMONSTRATION DE
L'ACP
C o m e t o the Congress a n d participate at the Poster Festival.
M a k e a presentation a n d mingle with colleagues to see what
is new in all areas of Physics. C o m e join us in the Poster
Party.
Venez au Congrès et participez au festival de séances de
démonstration. Faites une présentation et échangez avec des
collègues p o u r vous tenir au c o u r a n t de l'actualité dans tous
les secteurs de la physique. Venez d o n c vous j o i n d r e à nous
p o u r le festival de séances de démonstration.
Y o u r P r o g r a m C o m m i t t e e has u n a n i m o u s l y agreed to try
an experiment following last year's success of the Division
of C o n d e n s e d M a t t e r when all 90 c o n t r i b u t e d papers were
presented in Poster Sessions. This year all contributed
papers will be presented at two Gala Poster Sessions. Several
a d v a n t a g e s should accrue. There will be fewer parallel
sessions, a chance to learn of advances in related (and
f a r t h e r away) fields, you will r u b shoulders with friends
a n d colleagues in a relaxed mode.
Le C o m i t é du p r o g r a m m e a décidé à l'unanimité de tenter
une expérience à la suite du succès que la Division de la
matière condensée a r e m p o r t é l'année d e r n i è r e ; on se
rappellera q u ' à cette occasion, les 90 exposés avaient été
présentés lors des séances de d é m o n s t r a t i o n . Cette année,
tous les exposés seront présentés à l'occasion de deux séances
de démonstration de gala. Les avantages en sont n o m b r e u x :
il y a u r a moins de séances parallèles, on a u r a l'occasion de
p r e n d r e connaissances des progrès dans des d o m a i n e s
connexes (et m ê m e étrangers), vous y côtoierez des amis et
des collègues d a n s une a t m o s p h è r e détendue.
Instructions and Arrangements for Poster Presentation
Instructions et renseignements concernant la présentation
de Posters
Posters will be organized into sections by subject area a n d
a n u m b e r of sections will be located in the s a m e r o o m .
Les séances de d é m o n s t r a t i o n seront réparties en sections
p a r sujet, et un certain n o m b r e de sections seront groupées
dans la m ê m e pièce.
T h e poster b o a r d s will be vertical, 1.2 m high a n d 2 m in
length. Table space a n d t w o chairs will be placed near each
b o a r d . Poster pins will be available.
T h e title of the paper, the a u t h o r s a n d the institution should
be displayed clearly in lettering at least once inch high. T h e
text should include an i n t r o d u c t i o n to the topic, a general
outline of the work a n d a conclusion. Detailed analysis is
best left for the private discussions that the poster itself
will initiate.
A u t h o r s are asked to have their posters m o u n t e d by
9:00 a . m . for each session and to remove them before
5:30 p . m . the same day. At least one a u t h o r is requested to
stand by the poster during a designated period (about
2 hours) of the session.
Les p a n n e a u x seront verticaux et m e s u r e r o n t 1.2 m de
h a u t e u r sur 2 m de longueur. Une table et deux chaises
seront placées près de c h a q u e poster. On f o u r n i r a des
punaises.
Le titre de la présentation, de même que les n o m s des
auteurs et celui de l'institution, doivent être bien à la vue, en
lettres d ' a u moins un pouce de h a u t e u r . Le d o c u m e n t doit
c o m p r e n d r e une introduction, les grandes lignes du travail
et une conclusion. P o u r l'analyse détaillée, il vaut mieux
attendre les discussions privées que le poster lui-même
suscitera.
On d e m a n d e aux auteurs de voir à ce que leurs posters
soient montés a v a n t 9 h p o u r c h a q u e séance puis de les faire
d é m o n t e r avant 17 h 30 le m ê m e j o u r . Au moins un a u t e u r
doit être sur place d u r a n t une periode spécifiée de la séance.
13
14
Physics in Canada
Call for Abstracts
Appel de Résumés
CAP-CAS Congress 1983
Congrès ACP-SCA 1983
Rules on Abstracts
Règles de présentation
1.
A participant usually is permitted to present orally only one
contributed paper.
1.
N o r m a l e m e n t , un prticipant ne peut présenter
q u ' u n e seule c o m m u n i c a t i o n .
2.
T h e abstract must be one p a r a g r a p h , single spaced, elite type
(12 c h a r a c t e r s / i n c h ) , to fit into a n area 12.0 cm wide and
10.5 cm long. T y p e with a c a r b o n r i b b o n or a fresh black cloth
ribbon. Blank f o r m s have been provided at the center of this
issue. F u r t h e r sheets are available at the C A P office or an
identical sheet in which the center f r a m e is d r a w n with an
Eagle Sky Blue 740'/2 pencil can be p r e p a r e d locally, using a
g o o d quality white p a p e r .
2.
Le résumé doit c o m p o r t e r un seul p a r a g r a p h e dactylographié
avec caractère élite à simple intervalle, limité à 12.0 cm. de
largeur et 10.5 cm. de h a u t e u r . Se servir d ' u n r u b a n c a r b o n n e
ou d ' u n r u b a n de soie noir neuf et de b o n n e qualité et utiliser
les f o r m u l e s ci-incluses. Des copies supplémentaires sont
disponibles au secrétariat de l ' A C P o u encore faire des
f o r m u l e s identiques sur papier blanc de b o n n e qualité en
traçant le cadre au crayon bleu Eagle "Sky Blue" 740'/2.
3.
Indent the first line 8 spaces, to allow for a p r o g r a m n u m b e r
t o be inserted later. Start with the title, capitalize the first
letters of i m p o r t a n t words, a n d underline. Next, type the
a u t h o r ( s ) name(s), all in capitals. Follow with the abbreviated
n a m e of the a u t h o r ' s professional affiliation, with initial
letters capitalized, a n d underline. A f t e r a dash, the text
follows immediately.
3.
Sur la première ligne, après 8 espaces laissées libres p o u r
l'insertion ultérieure d ' u n n u m é r o , on doit inscrire le titre en
écrivant en majuscule la première lettre des mots i m p o r t a n t s
et souligner. Ensuite, en majuscules, le(s) nom(s) d'auteur(s).
Puis inscrire et souligner le n o m abrégé de l'institution (seule
la première lettre en majuscule). Le texte doit suivre immédiatement sans aller à la ligne mais après un tiret.
4.
Leave one b l a n k line between the text a n d the footnotes. F o r
the title a n d byline use the superscript symbols '*', for the
text, the superscript numerals' 2 1 .
4.
Laisser en blanc l'espace d ' u n e ligne entre le texte et les
renvois. P o u r la disposition des renvois clans l'entête, utiliser
'*', et d a n s le texte utiliser' 2 '.
5.
Indicate on the abstract the a p p r o p r i a t e subject index
according t o the list a c c o m p a n y i n g these instructions. If
necessary, also indicate a p p r o p r i a t e session headings for y o u r
paper.
5.
I n d i q u e r sur la feuille du résumé, la cote a p p r o p r i é e se
r a p p o r t a n t au sujet, telle que d o n n é e d a n s la liste qui a c c o m pagne ces règles de présentation. Si jugé nécessaire, indiquer
aussi la séance a p p r o p r i é e p o u r votre c o m m u n i c a t i o n .
6.
Overhead projectors only will be provided, unless a special
request is m a d e . This a n d a n y o t h e r requests should be
indicated o n the abstract.
6.
Seuls des retroprojecteurs seront disponibles, à moins que le
besoin d ' u n a u t r e f o r m a t soit expressément indiqué sur la
feuille du résumé.
7.
Submit the abstract in triplicate. All instructions must be on
the a b s t r a c t ; d o not send an a c c o m p a n y i n g letter.
7.
8.
Failure t o c o m p l y with these instructions is likely to result in
the exclusion of y o u r abstract.
On doit f o u r n i r 3 exemplaires de c h a q u e résumé. T o u t e s les
instructions doivent être sur la feuille du résumé. N'envoyer
a u c u n e lettre p o u r a c c o m p a g n e r celui-ci.
8.
Les résumés ne se c o n f o r m a n t pas à ces règles de présentation
p o u r r o n t être exclus d u p r o g r a m m e .
Abstracts must be in the C A P Office
by the Deadline Date:
March 25, 1983
D a t e limite p o u r réception des résumés
au b u r e a u de l ' A C P :
le 25 mars 1983
Send abstracts t o : / E n v o y e r les résumés à :
B.P. Stoicheff
Program Chairman
1983 CAP/CAS Congress
c / o Canadian Association of Physicists
151 Slater St., Suite 805
Ottawa, Ontario KIP 5H3
oralement
SAMPLE ABSTRACT
Congrès ACP/SCA 1983 CAP/CAS Congress
University of Victoria
Victoria, B.C., June 27-30
Subject Index
C o t e du sujet
C A P Subject Division or C A S
Division de l ' A C P ou S C A
A p p r o p r i a t e Session H e a d i n g
Séance a p p r o p r i é e
1.
1.
1.
2.
2.
2.
Analysis of a Satellite Collision.* A.A. ABLE,
BARBARA B. BERNSTEIN and C.C. COSTEAU, Inst. Casual Sci.
U. of Upper Ungava - An attempt is made to explain the
severe orbital perturbations suffered recently by the
two Canadian satellites, ARCAIRE and MUSICAL. It
appears that this event and the subsequent loss of the
spacecraft was due to some kind of collision. Previous
analysisJ has established that the collision was
neither inelastic nor one involving significant
gravitational forces. The present paper explores by
computer simulation a third possibility - that the
interaction involved coulomb forces. One spacecraft
was emerging from a long period of darkness and the
other had been continuously illuminated so that the
satellites may have been oppositely charged. The
analysis shows that a close encounter of this third
kind did not occur and therefore that the demise of
the satellites is still unexplained.
Bernstein B.B. and Able, A.A., Can. J. App. Serendip.,
23,
456
(1978).
*Supported by the Nat. Soc. for Enhanced Refuse Control.
•12.0 cm.
Projection R e q u i r e m e n t s
•
O
From:
De :
Overhead
Other (Specify)
_
Special Instructions (if any)
Instructions spéciales (s'il y en a)
Signature.
Name/Nom.
Address/Adresse.
16
Physics in Canada
Victoria, B.C.
June 27-30
GENERAL INFORMATION
RENSEIGNEMENTS GÉNÉRAUX
T h e thirty-eighth A n n u a l Congress of the C a n a d i a n Association
of Physicists will take place at the University of Victoria f r o m
M o n d a y , J u n e 27 to Thursday, J u n e 30, 1982. It will be held jointly
with the f o u r t e e n t h meeting of the C a n a d i a n Astronomical
Society.
Le trente-huitième congrès annuel de l'Association c a n a d i e n n e
des physiciens aura lieu à l'Université de Victoria, d u lundi 27 juin
au jeudi 30 juin 1983. Il se déroulera c o n j o i n t e m e n t avec la
q u a t o r z i è m e assemblée de la Société c a n a d i e n n e d ' a s t r o n o m i e .
TRANSPORT À VICTORIA
TRAVEL TO VICTORIA
Victoria a i r p o r t is located on the Saanich Peninsula a b o u t 25 km
north-west of the University, which itself is 8 km north-east of the
city centre. The airport is served by Air C a n a d a , C a n a d i a n Pacific
a n d Pacific Western Airlines, a n d Air B.C., the last of which
operates f r o m the South Terminal at Vancouver A i r p o r t (connection via shuttle bus). Several transcontinental flights terminate in
Victoria daily, usually with stops in Vancouver, Calgary o r
E d m o n t o n . C h a r t e r flights are also available f r o m the South
Terminal at Vancouver A i r p o r t .
A limousine service links Victoria a i r p o r t with the city, a n d stops
on the way at the Mayfair Shopping Centre; the fare is $7. A taxi
f r o m the city to the c a m p u s is a b o u t $8, and f r o m Mayfair,
a b o u t $6. A taxi directly to the c a m p u s f r o m the a i r p o r t would
cost over $20.
F o r those w h o obtain reduced fares (e.g. Skybus) terminating at
Vancouver, a n d w h o wish to avoid the additional air fare to
Victoria, a surface bus connection f r o m Vancouver a i r p o r t t o
d o w n t o w n Victoria operates twice daily, at 1400 hrs a n d 2000 hrs.
The trip takes a b o u t 3'A hours including the ferry crossing, and the
fare is $12.50 plus the ferry fare of $3.70. A bus f r o m Vancouver
A i r p o r t to the A i r p o r t Inn also connects with the intercity bus
which b o a r d s every ferry.
F o r those travelling by car, the most convenient route is via B.C.
Ferries, which can be boarded at Tsawwassen, south of Vancouver.
T h e ferries n o r m a l l y depart every h o u r f r o m 0700 hrs to 2100 hrs
f o r Swartz Bay, a b o u t 30 km n o r t h of the University, but schedules are subject to change. The sailing time is a b o u t l'A hours.
T h e f a r e is currently $16.95 one way f o r car a n d driver, a n d $3.70
per passenger. Overheight (over 6 ft. 8 in.) a n d longer vehicles are
charged higher fares.
REGISTRATION
D u r i n g the evening of Sunday, J u n e 26, Congress registration
will be located in the Student Union Building, where a reception
will also be held. Thereafter, beginning at 0830 hrs on M o n d a y ,
Congress registration will be in the E l l i o t t / M a c L a u r i n Building,
where the sessions will be held. Registration packages will be p r o vided for c o m p a n i o n s w h o preregister, or w h o register during the
S u n d a y reception.
ACCOMMODATION
On Campus
A c c o m m o d a t i o n is available for all delegates in modern residences
with single a n d twin-bed r o o m s a n d central w a s h r o o m facilities.
Delegates are offered a bed a n d b r e a k f a s t plan at the single rate of
$28 per d a y plus tax or a d o u b l e rate of $19.25 per day per person
plus tax. Delegates wishing o n - c a m p u s a c c o m m o d a t i o n should
complete and return the a p p r o p r i a t e f o r m . Please note that reservations c a n n o t be confirmed unless they are a c c o m p a n i e d by a
L ' a é r o p o r t de Victoria est situé dans la péninsule de Saanich, à
environ 25 km au nord-ouest de l'Université qui, elle, se trouve à
8 km au nord-est d u centre-ville. L ' a é r o p o r t est desservi p a r Air
C a n a d a , C P Air, Pacific Western Airlines et Air B. C., cette
dernière f o n c t i o n n a n t à partir du terminus sud de l'aéroport de
Vancouver (navette d ' a u t o b u s ) . Il existe plusieurs vols t r a n s c o n tinentaux quotidiens à destination de Victoria, habituellement
avec escales à Vancouver, Calgary ou E d m o n t o n . On peut également se prévaloir de vols nolisés à partir d u terminus sud de
l'aéroport de Vancouver.
Un service de limousine relie l'aéroport de Victoria à la ville,
avec arrêt en cours de route au centre commercial M a y f a i r ; le
trajet coûte $7. Une course en taxi de la ville au c a m p u s coûte
environ $8 et, d u centre commercial Mayfair au c a m p u s , environ
$6. Une course en taxi directement de l'aéroport au c a m p u s
coûterait plus de $20.
P o u r ceux et celles qui e m p r u n t e n t des vols à taux réduits
(par ex., Skybus) à destination de Vancouver et qui désirent éviter
le coût d ' u n vol supplémentaire j u s q u ' à Victoria, il existe deux fois
p a r j o u r , soit à 14 h et à 20 h, un service de navette p a r a u t o b u s
de l'aéroport de Vancouver au centre-ville de Victoria. Le trajet
d u r e environ 3!4 heures, y compris la traversée, et il coûte $12,50
plus $3,70 de traversier. Il y a enfin c o r r e s p o n d a n c e entre l ' a u t o bus qui relie l'aéroport de Vancouver a u A i r p o r t Inn et l ' a u t o b u s
interurbain qui a t t e n d c h a q u e traversée.
D a n s le cas de ceux et celles qui voyagent p a r a u t o m o b i l e , la
m é t h o d e la plus pratique est d ' e m p r u n t e r les traversiers de la
C.-B., à Tsawwassen, au sud de Vancouver. Les traversiers p a r t e n t
n o r m a l e m e n t à l'heure juste, de 7 h à 21 h, à destination de
Swartz Bay, environ 30 km au n o r d de l'Université, mais les
horaires peuvent changer. La traversée dure environ l'A heures.
L'aller coûte actuellement $16,95 p a r a u t o m o b i l e et c o n d u c t e u r , et
$3,70 p a r passager. Il en coûte plus cher p o u r les véhicules h a u t s
(plus de 6'8") et longs.
INSCRIPTION
Au cours de la soirée du d i m a n c h e 26 juin, l'inscription au congrès
se fera au Student U n i o n Building ; il y aura également une réception à cet endroit. Par la suite, soit à partir de 8 h 30 le lundi,
l'inscription aura lieu au pavillon E l l i o t t / M a c L a u r i n , où se
d é r o u l e r o n t les séances. Des trousses d'inscription seront remises
à ceux et celles qui s'inscriront au préalable ou au cours de la
réception du d i m a n c h e .
HÉBERGEMENT
Sur le campus
T o u s les délégués peuvent être hébergés d a n s des résidences
m o d e r n e s dotées de c h a m b r e s à coucher à lit simple ou à lits
j u m e a u x et de salles de bain centrales. La c h a m b r e avec petit
déjeuner compris coûte $28 p a r j o u r , taxe en sus, d a n s le cas
d ' o c c u p a t i o n simple, ou $19,25 p a r j o u r p a r personne, taxe en
n o n - r e f u n d a b l e deposit of $20 per person to be received by J u n e 1,
1983. The balance of a c c o m m o d a t i o n cost is payable u p o n arrival.
Credit cards are not accepted.
Off-campus
Blocks of r o o m s have been reserved f o r delegates at three hotels
all close to the d o w n t o w n area and the inner h a r b o u r of Victoria
but a b o u t 8 km f r o m the university. Rates range from $39 to $80
per night excluding tax, and are detailed on the o f f - c a m p u s
a c c o m m o d a t i o n f o r m . The C h a t e a u Victoria has an indoor swimming pool and some r o o m s with adjoining kitchens. The a p p r o priate f o r m should be mailed directly to the hotel of your choice
by May 20, 1983. A municipal transit bus links the c a m p u s and
d o w n t o w n approximately every 20 minutes.
MEALS
Lunch a n d dinner will be available in the C a d b o r o C o m m o n s
Dining Hall at a cost of $4.75 for lunch a n d $5.75 for dinner, f o r
which tickets must be purchased in advance at the time of registration. Meals may also be obtained elsewhere on c a m p u s for
cash. Parking permits will be available free to those staying on
c a m p u s a n d $1 per day for those staying off c a m p u s .
T h e Faculty C l u b has reciprocal a r r a n g e m e n t s with clubs at m a n y
other universities, and guest m e m b e r s h i p s are available for all
registrants.
T O U R S AND SOCIAL EVENTS
Please note that, except for the TRIUMF
subjet to change.
tours, dates and times are
17
sus, dans le cas d ' o c c u p a t i o n double. Les délégués qui désirent
être hébergés sur le c a m p u s doivent remplir et retourner la formule
appropriée. Il y a lieu de noter qu'il est impossible de c o n f i r m e r
les réservations à moins que les formules, accompagnées d ' u n
dépôt non r e m b o u r s a b l e de $20 p a r personne, ne soient reçues
d'ici le 1er juin 1983. Le solde du coût d'hébergement doit être
réglé à l'arrivée. Les cartes de crédit ne sont pas acceptées.
Hors campus
On a réservé des groupes de c h a m b r e s p o u r les délégués à trois
hôtels qui se trouvent à proximité du centre-ville et du port
intérieur de Victoria, mais à environ 8 km de l'Université. Les
taux varient de $39 à $80 p a r nuit, taxe en sus, et sont expliqués
sur la formule de d e m a n d e d ' h é b e r g e m e n t hors c a m p u s . Le
C h â t e a u Victoria c o m p t e une piscine intérieure et quelques
c h a m b r e s avec cuisine adjacente. Il faut envoyer la formule a p p r o priée p a r la poste directement à l'hôtel de votre choix, d'ici le
20 mai 1983. Un service d ' a u t o b u s municipal relie le c a m p u s au
centre-ville aux 20 minutes, a p p r o x i m a t i v e m e n t .
REPAS
Le déjeuner et le dîner seront servis au C a d b o r o C o m m o n s Dining
Hall, m o y e n n a n t $4,75 p o u r le déjeuner et $5,75 p o u r le d î n e r ; à
cet égard, il f a u d r a se procurer des billets à l'avance, au m o m e n t
de l'inscription. On peut également p r e n d r e ses repas ailleurs sur
le c a m p u s , m o y e n n a n t rétribution. Des permis de stationnement
seront remis gratuitement à ceux et celles qui seront hébergés sur
le c a m p u s et coûteront $ 1 p a r j o u r p o u r ceux et celles qui resteront
hors c a m p u s .
Le Faculty Club a conclu des accords réciproques avec les cercles
de n o m b r e d ' a u t r e s universités, et tous les délégués p o u r r o n t
obtenir des cartes de membres invités.
EXCURSIONS ET ACTIVITÉS SOCIALES
Visits to local Scientific Institutions
1. Tuesday, J u n e 28.
Pacific Geoscience Centre a n d Institute of Ocean Sciences, at
Patricia Bay, 25 km n o r t h of the University. Buses will leave the
campus at 1330 hrs returning 1700 hrs. The cost will be $5 per person.
2. Tuesday, J u n e 28.
D o m i n i o n Astrophysical O b s e r v a t o r y , 15 km northwest of the
c a m p u s . Buses will leave the c a m p u s at 2030 hrs and return at
a b o u t 2330 hrs. The cost will be $5 per person.
3. T h u r s d a y , J u n e 30.
T R I U M F accelerator, in Vancouver. Buses will leave the c a m p u s
for the ferry terminal at 1200 hrs a n d return at 2000 hrs. The cost
will be $15 per person, not including meals on b o a r d the ferries.
T h o s e who wish to d o so m a y take their baggage with them and
d e p a r t directly f r o m Vancouver, instead of returning to Victoria.
SOCIAL T O U R S AND C O M P A N I O N S ' PROGRAM
Prière de noter que, sauf pour ce qui est de l'excursion
les dates et les heures peuvent
changer.
TRIUMF,
Visite d'établissements scientifiques locaux
1. Le mardi 28 juin.
Le Pacific Geoscience Centre et l'Institute of Ocean Sciences, à
Patricia Bay, 25 km au nord de l'Université. Des autobus quitteront
le c a m p u s à 13 h 30, retour à 17 h. Il en coûtera $5 par personne.
2. Le mardi 28 juin.
Le D o m i n i o n Astrophysical Observatory, 15 km au nord-ouest
du campus. Des a u t o b u s quitteront le c a m p u s à 20 h 30, retour
aux environs de 23 h 30. Il en coûtera $5 p a r personne.
3. Le jeudi 30 juin.
L'accélérateur T R I U M F , à Vancouver. Des a u t o b u s quitteront le
c a m p u s à 12 h p o u r se rendre au traversier, retour à 20 h. Il en
coûtera $15 par personne, repas à b o r d des traversiers non
compris. Ceux et celles qui le désirent peuvent e m p o r t e r leurs
effets et quitter directement de Vancouver, plutôt que de r e t o u r n e r
à Victoria.
M o n d a y , J u n e 27.
Visit to Butchart G a r d e n s . Double-decker buses will leave the
c a m p u s at 1930 hrs, returning at 2230 hrs to allow viewing the
gardens and f o u n t a i n s by daylight a n d under illumination. T h e
cost is $11 per person.
A special recital presented by the music faculty at the University
of Victoria School of Music at 2000 hrs. Admission $3 per person,
proceedings going into a music scholarship f u n d .
ACTIVITÉS SOCIALES ET PROGRAMMES DES
COMPAGNONS
Le lundi 27 juin.
Visite des jardins Butchart. Trajet en impériale ; départ du
c a m p u s à 19 h 30 et retour à 22 h 30, de manière à p o u v o i r a d m i r e r
les jardins et les fontaines à la lumière du j o u r et avec illumination.
Il en coûtera $11 p a r personne.
Un récital spécial par la Faculté de musique de l'Université de
Victoria aura lieu à 20 h. L'entrée est de $3 p a r personne, les
recettes en étant versées à un fonds de bourses d'études en
musique.
18
Physics in Canada
Tuesday, J u n e 28.
Le mardi 28 juin.
G u i d e d tours are a r r a n g e d to visit Old Victoria, o r the Provincial
M u s e u m , o r Beacon Hill Park and the w a t e r f r o n t . The tours will
last approximately t w o hours a n d buses will leave the University
at 0930 hrs a n d 1630 hrs f o r d o w n t o w n Victoria. The t r a n s p o r t a tion cost will be $2 one way. In the a f t e r n o o n g r o u p s with guides
will visit h a n d i c r a f t galleries, antique shops, etc.; a p p r o x i m a t e
length of time is 2 h o u r s c o m m e n c i n g at 1400 hrs. At 1930 hrs a
fixed menu dinner is arranged in a well-known Chinese restaurant
in Victoria's historic C h i n a t o w n at a cost of $14 per person.
T r a n s p o r t a t i o n will be available to return participants to the
University at a cost of $2.
Excursions guidées aux fins de visiter les vieux quartiers de
Victoria, ou le Musée provincial, ou le parc Beacon Hill et les
quais. Les excursions d u r e r o n t approximativement deux heures et
les a u t o b u s quitteront l'Université à 9 h 30 et à 16 h 30 à destination du centre-ville de Victoria. L'aller coûtera $2 p a r personne.
L'après-midi, des groupes avec guide visiteront des galeries
d ' a r t i s a n a t , des boutiques d'antiquités, etc. ; les visites d u r e r o n t
environ deux heures, à partir de 14 h. A 19 h 30, un dîner à menu
établi à l'avance est prévu d a n s un réputé restaurant chinois d u
C h i n a t o w n historique de Victoria, au coût de $14 p a r personne.
P o u r revenir à l'Université, ceux et celles qui le désirent p o u r r o n t
se prévaloir du service offert m o y e n n a n t $2.
W e d n e s d a y , J u n e 29.
N a t u r e walk. Bring walking shoes. Cost approximately $5 per
person.
Le mercredi 29 juin.
Marche d a n s la nature. Il faut se m u n i r de chaussures p o u r la
marche. Il en coûtera environ $5 p a r personne.
ANNUAL B A N Q U E T
BANQUET ANNUEL
W e d n e s d a y , J u n e 29.
Le mercredi 29 juin.
T h e Congress B a n q u e t will take place in the C a d b o r o C o m m o n s
Dining Hall on the University C a m p u s . T h e cost will be $17 per
person. The b a n q u e t will be preceded by a no-host cocktail h o u r
in the same building a n d a full b a r service will be available.
ATHLETICS FACILITIES
Le b a n q u e t du congrès a u r a lieu au C a d b o r o C o m m o n s Dining
Hall, sur le c a m p u s de l'Université. Il en coûtera $17 par personne.
Le banquet sera précédé d ' u n coquetel sans hôte, d a n s le m ê m e
pavillon, avec service de b a r complet.
INSTALLATIONS D'ATHLÉTISME
T h e University's Physical E d u c a t i o n and Recreation Facilities are
available to registrants presenting their conference badges at a
charge of $1 per day, o r $5 per week. The facilities include a
swimming pool, exercise r o o m s , squash and tennis courts. Chip
trails are available f o r jogging a n d walking (at n o charge.)
Les personnes inscrites qui présenteront leurs m a c a r o n s p o u r r o n t ,
m o y e n n a n t $1 p a r j o u r ou $5 par semaine, avoir accès aux
installations d'éducation physique et récréatives de l'Université.
Ces installations c o m p r e n n e n t une piscine, des salles d'exercice
et des courts de squash et de tennis. Il y a également des sentiers
p o u r le jogging et la m a r c h e (sans frais).
SHOPPING
Victoria is the principal s h o p p i n g area of Vancouver Island, with
a variety of stores catering to residents and tourists, both d o w n town a n d in several s u b u r b a n s h o p p i n g centres. Most are within
easy reach of the c a m p u s by public t r a n s p o r t .
MISCELLANEOUS
Victoria a n d Vancouver Island offer n u m e r o u s attractions to
visitors, with m a n y nearby p a r k s as well as those f u r t h e r afield
such as Pacific Rim National P a r k (which includes the West
Coast Trail), a n d S t r a t h c o n a and other smaller provincial parks.
O p p o r t u n i t i e s f o r b o a t i n g and fishing in sheltered waters are
readily available.
Victoria has a flourishing cultural life, including music, live
theatre, art galleries and museums. Details of cultural events
taking place at the time of the Congress will be available at the
Registration Desk.
For information
please
contact:
EMPLETTES
Victoria est le principal secteur commercial de l'île Vancouver ;
toute une g a m m e de magasins accueillent les résidants et les
touristes, tant d a n s le centre-ville que d a n s les n o m b r e u x centres
commerciaux en banlieue. La plupart sont à peu de distance du
campus, p a r m o d e de transport en c o m m u n .
DIVERS
Victoria et l'île Vancouver o f f r e n t de n o m b r e u x attraits p o u r les
visiteurs ; il se trouve de n o m b r e u x parcs à proximité, ainsi que
d'autres plus éloignés, p a r exemple, le Parc national Pacific Rim
(qui c o m p r e n d le Sentier de la côte ouest), le parc Strathcona et
d ' a u t r e s petits parcs provinciaux. Il est facile de s ' a d o n n e r a u
canotage et à la pêche sur des eaux protégées.
La vie culturelle de Victoria b o u r d o n n e d'activité, qu'il s'agisse
de musique, de théâtre, de galeries d ' a r t ou de musées. On p o u r r a
obtenir des détails sur les activités culturelles a y a n t cours a u
m o m e n t du congrès en s'adressant au pupitre d'accueil.
Pour obtenir
adresser à :
des renseignements
D r . C . D . Scarfe
C h a i r m a n , Local Organizing C o m m i t t e e
C A S C A P 83
Physics D e p a r t m e n t
Victoria, B.C. V8W 2Y2
Tel: (604) 721-7740
complémentaires,
veuillez
vous
ADVANCE REGISTRATION
C A P / C A S Joint Congress
June 27-30, 1983
Please return before May 1 to:
CASCAP'83
Department of Physics
Victoria, British Columbia V8W 2Y2
Status:
Member CAP
Non-Member
•
•
Invited Speaker
Graduate Student
Undergraduate
•
•
High School Teacher
Companion
•
Please print names exactly the way you wish them to appear on the name tags!
Name:
Institution:
Address:
Telephone:
If a companion is planning to attend, please fill in:
Name of companion:
Address:
Telephone:
Advance registration fee enclosed:
Registration
Yes
•
No
•
Fees:
CAP Members and Invited Speakers
$50
Non-Members
$65
Teachers, Graduate and Undergraduate Students
Companions
PLEASE MAKE CHEQUES PAYABLE TO CASCAP'83 CONGRESS
FOR INFORMATION
I shall require the following
number of
ONLY
tickets:
($11 ea) Butchart Gardens
($14 ea) Chinese dinner
($3 ea) musical recital
($5 ea) nature walk
($5 ea) PGC/IOS
($17 ea) banquet
($5 ea) D A O
($15 ea) visit to TRIUMF
Bus tickets city tours: 0930 to town _
1630 to town
2130 return UVic.
$12
$ 5
•
•
INSCRIPTION À L'AVANCE
Congrès A C P - S C A
du 2 7 au 30 juin 1 9 8 3
CASCAP'83
Victoria, B.C. V8W 2Y2
Prière de retourner avant le 1" mai à :
Statut :
Membre de l'ACP •
Non-membre
•
Conférencier invité
Étudiant de 2e, 3e cycle
Étudiant de 1er cycle
Veuillez inscrire votre nom tel que vous le désirez sur votre
•
•
Enseignant au secondaire
Conjoint(e)
•
•
•
macaron!
Nom :
Organisme :
Adresse :
Téléphone :
Si votre conjoint(e) entend vous accompagner,
veuillez remplir cette section :
Nom du conjoint :
Adresse :
Téléphone:
Frais d'inscription à l'avance inclus :
oui
•
non
•
Frais d'inscription :
Membre de l'ACP et conférenciers invités $50
Enseignants au secondaire, étudiants des 1er, 2e et 3e cycles $12
Non membres $65
Conjoints $ 5
SVP LIBELLER VOTRE CHÈQUE À CASCAP 83 CONGRESS
POUR INFORMATION
SEULEMENT
Je désire réserver :
billets ($11 le billet) pour la visite à Butchart Gardens
billets ($14 le billet) pour le dîner chinois
billets ($3 le billet) pour le récital
billets ($5 le billet) pour la randonnée
billets ($5 le billet) pour la visite PGC/IOS
billets ($17 le billet) pour le banquet
billets ($5 le billet) pour la visite D A O
billets ($15 le billet) pour la visite à TRIUMF
Billets d'autobus pour visites de la ville : 09:30 aller
; 16:30 aller
; 21:30 retour à UVic.
Subject Index
C o t e d u sujet
C A P Subject Division o r C A S
Division de l ' A C P o u S C A
1.
1.
1.
2.
2.
•
•
From:
De :
Overhead
O t h e r (Specify)
_
Signature.
Name/Nom.
Address/Adresse.
Subject Index
C o t e du sujet
C A P Subject Division o r C A S
Division de l ' A C P ou S C A
1.
1.
1.
2.
2.
2.
From:
De :
Overhead
•
O t h e r (Specify)
Signature_
Name/Nom.
Address/Adresse.
2 7 - 3 0 June 1 9 8 3 / d u 27 au 3 0 juin 1 9 8 3
ON-CAMPUS ACCOMMODATION/LOGEMENT SUR LE CAMPUS
Mr/Mrs/Miss/Dr
M/ATVA/Vzy
_
Given names or initials/Prénomfs)
ou initiales
Surname/A'om
Address/Adresse
Telephone/Té/éphone
Home/Résidence
Offic t/Bureau
Please reserve me the following on-campus accommodation:
Veuillez me réserver, sur le campus :
room(s), single occupancy, including breakfast, @ $28/night plus tax
chambre(s), simple(s), avec petit déjeuner, @ $28 par jour (taxe en sus)
room(s), double occupancy, including breakfast, @ $19.25/person/night plus tax
chambre(s), double(s), avec petit déjeuner, @ $19.25 par personne par jour (taxe en sus)
Shared with:
accompagné de
for the nights of June 26 27 28 29 (circle which).
pour les nuits suivantes : 26 27 28 29 juin (cocher).
For information only/Pour information seulement
Please check the appropriate box(es) below if you expect to eat in the Commons Dining Room.
Veuillez indiquer les dates où vous comptez prendre des repas dans le Commons Dining Room.
Monday/lundi
June 27 juin
Tuesday/ward/
June 28 juin
'Wednesday/mercredi
June 29 juin
Thursday/jeudi
June 30 juin
Lunch @ $4.75
Déjeuner
•
•
•
•
Supper @ $5.75
Diner
•
•
•
•
A $20 non-refundable deposit is required from each person requesting accommodation. Accommodation will be confirmed
only if the deposit has been received with this form before 8 June 1983. The balance is payable on your arrival. Please make
your cheque or money order payable to "University of Victoria."
Toute personne qui fait une demande de logement doit accompagner sa demande d'un dépôt non remboursable de $20. Votre
réservation ne sera confirmée que sur réception de ce dépôt avant le 8 juin. Veuillez libeller votre chèque ou mandat poste à
l'ordre de University of Victoria. Le solde est payable à l'arrivée.
Please complete this form and return it with your deposit to:
Veuillez retourner ce formulaire dûment rempli avec votre dépôt à :
CASCASP 83
Victoria, B.C.
V8W 2Y2
CASCAP CONGRESS
27-30 June 1983
OFF-CAMPUS ACCOMMODATION — RESERVATION FORM
Please fill out this form and mail it, together with a cheque for the first night of accommodation, to the hotel of your choice,
to arrive before 20 May 1983.
Veuillez remplir le formulaire et le retourner avec le dépôt pour la première nuit à l'hôtel de votre choix avant le 20 mai 1983.
Mr/Mrs/Miss/Dr
M./AT'/Af/D'
.
First n a m t / P r é n o m
Surname/A'om
Address/Adresse
Telephone/Telephone
Home/Résidence
Office/Bureau
Empress Hotel
721 Government Street
Victoria, B.C.
V8W 1W5
(Tel: [604] 384-8111)
Single
Double,
or Twin
$73/night
Chateau Victoria
740 Burdett Avenue
Victoria, B.C.
V8W 1B2
(Tel: [604] 382-4221)
Single
Double,
or Twin
$62/night
A full kitchen is available at an additional $12/night.
Cuisine tout équipée disponible à un coût additionnel de
$12 par jour.
Dominion Hotel
759 Yates Street
Victoria, B.C.
V8W 1L6
(Tel: [604] 384-4136)
Single
Double
Twin
Lit simple
Lit double
Lits jumeaux
Please reserve/ Veuillez
réserver
$83/night
$67/night
$39/night
$44/night
$49/night
Arrivai/Arrivée
a.m. o n / l e
p.m.
A cheque for $
Chèque
- is enclosed.
ci-joint
Lit simple
Lit double
Lits jumeaux
$73 par jour
Lit simple
Lit double
Lits jumeaux
$62 par jour
room(s) for/chambre(s) pour
June/juin.
Signature.
Departure/Départ
$83 par jour
$67 par jour
$39 par jour
$44 par jour
$49 par jour
persons /personnes.
a.m. on//e
p.m.
June/juin.
19
COTE DU SUJET DES RESUMES
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
29.
30.
31.
32.
33.
34.
35.
36.
37.
Astrophysics
A t m o s p h e r i c a n d space physics
Electronic structure of a t o m s a n d molecules; T h e o r y
A t o m i c spectra a n d interactions with p h o t o n s
Molecular spectra a n d interactions with p h o t o n s
A t o m i c a n d molecular collision processes a n d interactions
Experimentally derived i n f o r m a t i o n on a t o m s a n d molecules
Studies of special a t o m s a n d molecules
Optical properties of solids
Electrical properties of solids
Magnetic properties of solids
Surfaces, thin films a n d whiskers
Low t e m p e r a t u r e physics
Lattice d y n a m i c s
Phase transitions
Liquids
Nuclear fission a n d p h o t o n u c l e a r reactions
Nuclear structure
Nuclear reactions a n d scattering
Optics a n d lasers
Particle physics
Fluid d y n a m i c s
Plasma physics
Theoretical physics
Statistical physics a n d t h e r m o d y n a m i c s
Acoustics, classical optics a n d electromagnetism
I n s t r u m e n t a t i o n a n d experimental techniques
Industrial a n d applied physics
E d u c a t i o n a n d training
R a d i a t i o n oncology physics
Diagnostic medical physics including nuclear medicine
Biomedical aspects of non-ionizing radiation
Health physics
Biophysics a n d radiobiology
Radiation dosimetry
Surface Science
Astronomy
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
29.
30.
31.
32.
33.
34.
35.
36.
37.
Astrophysique
A é r o n o m i e et physique de l'espace
Structure électronique des a t o m e s et molécules ; Théorie
Spectres a t o m i q u e s et interactions avec les p h o t o n s
Spectres moléculaires et interactions avec les p h o t o n s
Mécanismes de collision et d ' i n t e r a c t i o n a t o m i q u e s et moléculaires
I n f o r m a t i o n déduite d'expériences sur les a t o m e s et molécules
Études d ' a t o m e s et de molécules particuliers
E t a t solide, propriétés optiques
Etat solide, propriétés électriques
Etat solide, propriétés magnétiques
Surface, couches minces et whiskers
Physique à basses t e m p é r a t u r e s
D y n a m i q u e s des réseaux
C h a n g e m e n t de phase
Liquides
Fission et réactions photonucléaires
Structure nucléaire
Réactions et d i f f u s i o n s nucléaires
O p t i q u e et lasers
Physique des particules élémentaires
D y n a m i q u e des fluides
Physique des plasmas
Physique t h é o r i q u e
Physique statistique et t h e r m o d y n a m i q u e
Acoustique, o p t i q u e classique et électromagnétisme
I n s t r u m e n t a t i o n et techniques expérimentales
Physique industrielle et appliquée
Enseignement
Physique des r a y o n n e m e n t s en oncologie
Physique médicale diagnostique y c o m p r i s la médecine
nucléaire
Aspects biomédicaux des r a y o n n e m e n t s non-ionisants
Physique de la santé
Biophysique et radiobiologie
Dosimétrie des r a y o n n e m e n t s ionisants
Science des surfaces
Astronomie
The PAC MAN tried to eat me!
Le PAC MAN voulait me manger!
20
Physics in Canada
Ph.D. Degrees in Physics Awarded
at Canadian Universities in 1982
Doctorats décernés en physique
dans les universités canadiennes, 1982
UNIVERSITY O F VICTORIA
235
238
S a l a h u d d i n A H M A D , M u o n Induced Fission in
U and
U,
( G . A . Beer), N o v e m b e r 1981, n o w at L a b o r a t o i r e de l'Accelerateur Lineaire, Orsay, F r a n c e .
R o b e r t S A R R A C I N O , C o n s e r v a t i o n Laws, Pseudotensors a n d
Energy Localization in G e n e r a l Relativity, (F.I. C o o p e r s t o c k ) ,
M a y 1982. N o w at New Mexico Tech.
UNIVERSITY O F BRITISH C O L U M B I A
Spring 1982 Convocation:
B. H I L K O , Diagnostics in a High Density Z-Pinch Plasma,
(J. Meyer), N o v e m b e r 1981, n o w Research Associate at Physics
Dept., U.B.C.
S.J. S O N G , Climatic Significance of Hydrogen a n d Oxygen
Isotopic Ratios in Tree Rings, (J. G r a y ) , J u n e 1982, n o w at
United Petrol Labs in Calgary.
R.D. L A M O R E A U X , Cluster Patterns in Seismicity, (E. Nyland),
J u n e 1982, now at Chevron in Dallas.
C . J . R E B O L L A R , E a r t h q u a k e Source P a r a m e t e r Estimates
Using Limited Seismic D a t a , (E. Nyland), J u n e 1982, n o w at
C I C E S E , Ensenada, Mexico.
K . F . S P R E N K E , Potential Field Inversion, (E.R. Kanasewich),
J u n e 1982, n o w at the University of I d a h o , Moscow, I d a h o .
THE UNIVERSITY O F CALGARY
R . F . X . K I E F L , M u o n i u m a n d Positronium as Probes of Surfaces and Solids, (J. Brewer), J a n u a r y 1982, first Research
Associate at T R I U M F , n o w at the University of Zurich.
I . W . H . R O BoE R T S O N , Rocket b o r n e measurements of ^ 3 9 1 4 A
and A5577A
emissions f r o m diffuse a n d discrete a u r o r a e .
(L.L. Cogger) J u n e , 1982. Employed by Gulf C a n a d a , Calgary,
Alberta.
W a i - M i n g J o e K W A N , Electrical Power Extraction f r o m a
Supersonic Plasma F l o w , (B. A h l b o r n ) , April 1982, Research
Associate at Physics, U.B.C.
M.A. S H A K U R , <534S and ô ' s O Variations in Terrestrial Sulfates
( H . R . Krouse) J u n e , 1982. Employed as Postdoctoral Fellow,
University of Calgary.
S. T H E B E R G E , T h e C l o u d y Bag Model, ( D . B e d e r / A . T h o m a s ) ,
M a r c h 1982, full time e m p l o y m e n t with O n t a r i o H y d r o .
THE UNIVERSITY OF MANITOBA
Fall 1982 Convocation:
J . R . D A H N , Structure a n d T h e r m o d y n a m i c s of Li,TiS 2 : Theory
a n d Experiment (R.R. Haering), September 1982, full time
e m p l o y m e n t with N R C (Chemistry Division).
Kenneth Sau-Kin F O N G , The Emission Characteristics of a
Z-Pinch Plasma in a V a c u u m Spark Discharge, (A.J. Barnard),
J u n e 1982, Research Associate at T R I U M F .
J . A . J O H N S T O N E , A Microscopic Model of X Hypernuclei,
( D . B e d e r / A . T h o m a s ) , Sept. 1982, P o s t d o c t o r a l Fellow at Los
A l a m o s , New Mexico.
Patricia A n n K A L Y N I A K , T h e Effects of Massive Neutrinos and
Their Mixings on M u o n Decay, (D. B e d e r / J . Ng), July 1982,
P o s t d o c t o r a l Fellow at Physics, U.B.C.
A.R. T A Y L O R , A Survey of the Galactic Plane for Vaiable R a d i o
Emission, (P. Gregory), September 1982, n o w P . D . F . at Physics,
U.B.C., as of D e c e m b e r 1982, N S E R C - P D F at U. of T o r o n t o .
S I M O N FRASER UNIVERSITY
G . A . S C H O L Z , The Silver Intercalated 2 H - T a S 2 and lT-TiS 2
Transition Metal Dichalcogenides, ( R . F . Frindt), July 1982, n o w
at M a x - P l a n c k Inst., Berlin, W. G e r m a n y .
UNIVERSITY O F ALBERTA
N. U D E Y , Transient Kinetic T h e o r y of Mixtures, (W. Israel),
N o v e m b e r 1981.
Y.C. A T H I A S , Direct a n d Finite Variational M e t h o d s f o r the
Elastic W a v e E q u a t i o n (E.R. Kanasewich), N o v e m b e r 1981, now
as a n independent geophysical consultant in Calgary.
J . R . B E A M I S H , Dislocations a n d S o u n d P r o p a g a t i o n in Solid
3
H e a n d 4 H e , (J.P. F r a n c k ) , J u n e 1982, n o w at Metals Research
L a b o r a t o r y , Brown University.
H O , Shang-chang, "Magnetic Ordering Dilute Pd - M n Alloys"
(G. Williams) March, 1982. Presently an Assistant Professor,
University of Texas at El Paso.
K W A N , Shu-Po, "Microscopic Analyses of the (p,a) Reaction on
Fe and 5 6 F e " (N.E. Davison). Presently at Nuclear Research
Centre, University of Alberta.
54
UNIVERSITY O F WINDSOR
W.B. K O L A S A , F a r - i n f r a r e d a n d V U V studies of vibrational
spectra of rare earth d o p e d fluorite crystals, (M. Schlesinger),
J u n e 1982, now at D e p a r t m e n t of Electrical Engineering a n d
Physics, University of Detroit.
P. S K A L I N S K I , Collisional relaxation of multipole m o m e n t s in
4 2 P potassium a t o m s , (L. Krause), O c t o b e r 1982, now at Physics
D e p a r t m e n t , University of Windsor.
McMASTER UNIVERSITY
A . D . B E C K E , Numerical Hartree-Fock-Slater Calculations on
D i a t o m i c Molecules ( D . W . L . Sprung), September 1981; P D F
Dalhousie
B. M I T R O V I C , Effects of the Energy Dependence in the Electronic Density of States on Some S u p e r c o n d u c t i n g and N o r m a l
State Properties, (J.P. C a r b o t t e ) , September 1981; P D F at S U N Y ,
Stony Brook.
T.A. Z N O T I N S , 4.3 /Km C 0 2 Lasers, (B.K. Garside), N o v e m b e r
1981; Senior Research Scientist, Mathematical Sciences N o r t h west, Inc., Seattle.
K.E. L O C K E , Magnetic Excitations in the Diluted F e r r o m a g n e t
Ni 2 Mn 0 . 8 V 0 . 2 Sn, (C.V. Stager), D e c e m b e r 1981; Safety Analyst,
A.E.C.L., Sheridan Park Research C o m m u n i t y , Mississauga.
K.S. K U M A R , Models for the Low-Energy K-N and t t - N Interactions, (Y. Nogami), M a r c h 1982; P D F , Dalhousie
UNIVERSITY OF G U E L P H
H . H . J O R C H , The T e m p e r a t u r e - D e p e n d e n c e of Positron D i f f u sion in G e and Si (I.K. MacKenzie), O c t o b e r 1981, n o w at A E C L
Chalk River.
T. R A C E Y , An Oscillating a n d Translational Analysis of the
Quasi-elastic Light Scattering Spectrum of C. reinhardtii (F.R.
Hallett), May, 1982, n o w at A n d y n e Associates, Kingston,
Ontario.
D . J . S I M I N O V I T C H , Nitrogen-14 Nuclear Magnetic Resonance
Studies of Model M e m b r a n e s (K.R. Jeffrey) July, 1982.
J . A . M A X W E L L , Theoretical Studies of the Visual Responses of
the Lateral C o m p o u n d Eye of Limuluspolyphemus
( G . H . Renninger), August, 1982, n o w at University of G u e l p h .
UNIVERSITY O F WATERLOO
P A . J A A N I M A G I , X-Ray Streak C a m a e r a , (N.R. I s e n o r / M . C .
Richardson), O c t o b e r 1981, now at Massachusetts Institute of
Technology as a Research Associate.
B.S. B H A R A J , O r d e r T r a n s f e r N M R : A New Tunneling Spectroscopy, ( M . M . Pintar), M a y 1982, n o w at the Physics D e p a r t ment, Universidade Federal d o M a r a n h a o , Brazil since M a r c h
1982.
with the
Ontario.
Atmospheric
Environment
Service,
21
Downsview,
R.B. M A N N , Investigations of an Alternative T h e o r y of G r a v i tation, (J.W. M o f f a t ) , D e c e m b e r 1982, n o w an N S E R C P . D . F .
at H a r v a r d University, Dept. of Physics, C a m b r i d g e , Massachusetts.
S.E. N A G L E R , Spin D y n a m i c s of Quasi One Dimensional Spin
Vi Ising-Like A n t i f e r r o m a g n e t s , (R.L. A r m s t r o n g ) , D e c e m b e r
1982, n o w N S E R C P . D . F . at IBM Labs, Y o r k t o w n Heights, N.Y.
G.W.A. ROWE, Information Content, Thermodynamics and
C o d o n Bias in Viral D N A , ( L . E . H . Trainor), J u n e 1982, n o w
M R C Fellow, D e p a r t m e n t of Medicine, University of T o r o n t o .
D . W . R U E S I N K , Uniaxial Stress Dependence of the Fermi
Surface of C o p p e r , (J.M. Perz), J u n e 1982, n o w Research Associate, Division of Physics, National Research Council, O t t a w a ,
Ontario.
B.M. W O O D , A Fourier T r a n s f o r m N M R Study of Solid
Methanes, (R.F. Code), J u n e 1982, now Research Scientist,
Division of Physics, National Research Council, O t t a w a , O n t a r i o .
P.P.C. W U , The Viscosity of the Lower Mantle, (W.R. Peltier),
J u n e 1982, now at Petro C a n a d a , Calgary, Alberta.
CARLETON UNIVERSITY
YORK UNIVERSITY
Ramesh P O O R A N , Upper and Lower Bounds in Collision Theory,
(Dr. J . W . Darewych), N o v e m b e r 1981, O n t a r i o H y d r o .
Stergios S T E R G I O P O U L O S , An Experimental Study of Inertial
Waves in a Fluid C o n t a i n e d in a R o t a t i n g Cylindrical Cavity
D u r i n g Spin-Up F r o m Rest, (Dr. K . D . Aldridge), J u n e 1982,
York University.
F . G . O A K H A M , A Search for the E-Meson in an 11 G e V K P
Experiment, (R.K. Carnegie), September 1981, now Research
Associate in D e p a r t m e n t of Physics, Carleton University, O t t a w a .
UNIVERSITÉ D'OTTAWA
G e r a l d G O O D C H I L D , Crystallography and Optical Properties
of Some Chalcopyrite Materials, ( J o h n Woolley), May 1982,
National Research Council.
UNIVERSITY OF T O R O N T O
J. B A N I C , Laser G e n e r a t i o n of V a c u u m Ultraviolet Radiation
and Fluorescence Studies of Nitric Oxide, (B.P. Stoicheff),
December 1982, n o w N S E R C Industrial P . D . F . at O P T E C INC.,
Downsview, O n t a r i o .
Z. B A R A K , Phase Transitions in C h r o m i u m , (M.B. Walker),
December 1982, n o w a p a r t n e r in m i c r o - c o m p u t i n g c o n s u l t i n g /
programming company, Toronto, Ontario.
CONCORDIA UNIVERSITY
N.R. L E W I S , Calculation of S p i n - H a m i l t o n i a n parameters for
Gd 3 + d o p i n g isostructural series of rare-earth metal trichloride
hexahydrates and trifluorides, (S.K. Misra), April 1982, presently
at Vanier College, Montreal.
ÉCOLE P O L Y T E C H N I Q U E
R.J. B O T T O M L E Y , A r - " A r D a t i n g of Melt Rock f r o m Impact
Craters, (D. York), J u n e 1982, n o w research scientist at Shell
Petroleum, Calgary, Alberta.
J . L . P A R P A L , Détection p h o t o a c o u s t i q u e d'aérosols sur une
surface : étude des problèmes de contact t h e r m i q u e et application
à l'amiante (J.M. Gagné), janvier 1982, I R E Q , Varennes.
M.A. B U C K B Y , Selected Nuclear Reactions in Supernova
Explosions, ( J . D . King), F e b r u a r y 1982, n o w Lecturer, Ryerson
Polytechnical Institute, T o r o n t o , O n t a r i o .
McGILL UNIVERSITY
40
M. D T O R I O , F a s t F o u r i e r T r a n s f o r m C h l o r i n e N u c l e a r
Quadrupole Resonance Spectroscopy, (R.L. Armstrong),
F e b r u a r y 1982, n o w N S E R C P . D . F . at IBM Labs, Zurich,
Switzerland. March 1/83, research scientist N R C , O t t a w a .
A.V. D Y C K , A M e t h o d for Quantitative Interpretation of Wideband, Drill-hole EM Surveys in Mineral Exploration, ( G . F . West),
F e b r u a r y 1982, n o w a research scientist with D e p a r t m e n t of
Energy, Mines & Resources, O t t a w a , O n t a r i o .
M . G . G R A N T , Generalized Langevin T h e o r y for I n h o m o g e n e o u s
Fluids, (R.C. Desai), D e c e m b e r 1982, n o w N S E R C P . D . F . at
T e m p l e U n i v e r s i t y , D e p a r t m e n t of Physics, P h i l a d e l p h i a ,
Pennsylvania.
C . M . H A L L , The Application of K-Ar and 4 0 Ar- 3 9 Ar M e t h o d s to
the Dating of Recent Volcanic and L a s c h a m p Event, (D. York),
F e b r u a r y 1982, n o w a r e s e a r c h a s s o c i a t e , D e p a r t m e n t of
Physics, University of T o r o n t o .
P. J O E , The Shedding of Millimeter Sized D r o p s in Simulated
Hail F o r m a t i o n , (R. List), D e c e m b e r 1982, n o w research scientist
Shaun L O V E J O Y , T h e remote sensing of rain ( G . L . Austin)
N o v e m b e r , 1981. N o w an N S E R C Postdoctoral Fellow — J o i n t
with French Meteorological Service and a French University —
Paris.
D o n a l d F. W I L F O R D , T h e Behaviour of Iron and Cobalt in a
C h r o m i u m Based Spin-Density-Wave Host (J. Strom-Olsen)
N o v e m b e r , 1981. N o w with United Technologies C o r p . , Mississauga, Ont., Senior Aerodynamicist.
M a r i o B A I B I C H , T h e r m o p o w e r and Resistivity of Binary
Metallic Glasses. (W.B. Muir). J u n e 1982. N o w on staff of the
Physics D e p a r t m e n t of U . F . R . G . S . in P o r t o Alegre, Brazil. —
Universidada Federal d o Rio G r a n d e d o Sul.
Kamilia S O F I A , Studies of neutron deficient xenon
(J.E. C r a w f o r d ) . J u n e 1982. N o w in Saudi Arabia.
nuclei.
UNIVERSITÉ D E MONTRÉAL
R. B O R N A I S , Effets des c o u r a n t s mésoniques d ' é c h a n g e sur
les facteurs de f o r m e électromagnétique des n o y a u x à trois
nucléons (B. G o u l a r d ) février 1982.
22
Physics in Canada
M. F A R I N E , Calculs des coefficients macroscopiques des formules
de masse dans l'approximation de Hartree-Fock (J.M. Pearson)
février 1982.
G. L E C L A I R , Amortissement des solitons-enveloppes en régime
de fréquence hybride-inférieure (J. Teichmann) janvier 1982.
R. L E C O M T E , Étude de la déformation des noyaux doublement
pairs de la région N = 34 - 48 par excitation coulombienne
(S. M o n a r o ) novembre 1981.
P. V A S I L O P O U L O S , Équations de transport quantiques et
applications au transport à travers des états localisés (K.M. Van
Vliet) septembre 1982.
INRS-ÉNERGIE — Université du Québec
Doctorats en énergie
G. M I T C H E L , Diffusion de lumière incidente lors de l'interaction
laser C 0 2 cible solide, (B. Grek), juillet 1981, IREQ, Varennes.
R. C H A H I N E , Spectroscopie dans le domaine temporel pour
l'étude du comportement diélectrique, (T.K. Bose, UQTR),
décembre 1981.
P. H E R O U X , Lignes de transport d'énergie à très haute tension :
réduction de l'effet couronne sous tension alternative, (N.G. Trinh)
mars 1982.
J.C. K I E F F E R , Étude d u transport d'énergie par les électrons
suprathermiques dans l'interaction laser C 0 2 cibles solides,
(H. Pépin), juillet 1982. Boursier post-doctoral INRS-Énergie.
UNIVERSITE DE SHERBROOKE
A. RAMBO, Propriétés magnéto-optiques du Cd 3 As 2 , (M. Aubin),
août 1982, Collège Militaire Royal de St-Jean, St-Jean, Qué.
UNIVERSITE LAVAL
Pierre B E R N A R D , « Contribution à l'étude du C H 3 O H en
milieu actif », (Jerald R. Izatt), juin 1982, chercheur à l'IREQ,
Varennes, Québec.
Marie F O N T A I N E , « Sur la description géométrique des forces
électromagnétiques » (Pierre L. Amiot), novembre 1982, à la
recherche d'un emploi.
Pierre M A T H I E U , « Élargissement de la couverture spectrale des
lasers submillimétriques haute puissance à pompage optique »
(Jerald R. Izatt), novembre 1982, chercheur au Conseil de
Recherches pour la Défense, Valcartier — Québec
Anita P O U L I N , « Contribution à l'Étude de l'argon et de CS 2
par spectrométrie électronique » (Denis ROY), juin 1982, analyste
à la Régie de l'assurance automobile du Québec.
Claude R I O U X , « Test du théorème de polarisation-pouvoir
d'analyse et de la symétrie du temps dans les réactions nucléaires »
(Rodolfo J. Slobodrian), juin 1982, chercheur postdoctoral à
l'Université de Californie à Berkeley.
Jean S A B B A G H , « Étude des transitions multiphotoniques
libres-libres lors de la diffusion électron-argon en présence du
champ d'un laser C O r T E A » (See Leang C H I N ) , juin 1982,
chercheur à l'INRS-Énergie, Varennes, Québec.
Pierre VERLY, « Étude de la rétroaction distribuée en optique
intégrée » (Réal Tremblay), novembre 1982, chercheur au Conseil
National de Recherche.
Jean-Eudes V I L L E N E U V E , « L'image tri-dimensionnelle du
point sous l'influence conjointe de l'aberration sphérique et du
filtrage d ' a m p l i t u d e » (Albéric B O I V I N ) , n o v e m b r e 1982,
chercheur postdoctoral à l'Université Laval.
MEMORIAL UNIVERSITY OF NEWFOUNDLAND
Peter H. G A M M O N , Brillouin Spectroscopic Studies of the Elastic
Properties of Artificial and Natural Ice Samples (Clouter/
Kiefte), October 1981, now at ICE Engineering, St. John's,
Newfoundland since May, 1981.
News/Nouvelles
1.5% BY 1985?
For several years successive Federal administrations have recognized the importance of R & D to the strength of the Canadian
economy and to the quality of life of Canadians. The present
government has repeatedly expressed its commitment to direct
1.5% of the G N P towards research and development by 1985.
At the council meeting in June 1982 the question was asked
whether this commitment would involve some major changes in
the funding pattern, and the view was expressed that the government would reduce its own contribution from about 1% to 0.5%
in the given time interval. Since continued funding of research at
the universities is of vital importance, a committee was struck to
investigate this issue.
The committee wrote to the Minister of Science and Technology
and the reply which it received is remarkable in several respects.
First, it reconfirms the continued commitment by the government
to increase the spending on R & D. Second, it spells out that
about 1/5 of the spending should go into universities research
and third, it asks for further input f r o m the university community.
Our letter and the Minister's reply are printed below.
We would like you to comment on this letter, so that we can
communicate the views of the physics community to the Minister.
We think that it is important to maintain the dialogue for which
the Minister has asked. This contact is vital at a time when every
budget item which does not produce jobs immediately may
come under severe pressure. It is likely that the new minister will
need all the help he can get to defend this steadily growing R & D
budget. Please send your comments to:
C A P Committee on R & D Support 1982,
C. Irwin
B. Ahlborn
Simon Fraser University
University of British Columbia
July 12, 1982
To the Honourable Mr. John Roberts,
Minister of State for Science and Technology,
Room 105-S,
House of Commons, O T T A W A
Dear Mr. Roberts:
The Council of the Canadian Association of Physicists (CAP)
welcomes the government's repeated commitment to raise the
level of funding for fundamental research lo 1.5% of the G N P
by 1985.
The Council has created a committee, chaired by myself, t o investigate the consequences of this policy on basic research in Physics.
We understand that in spite of the general increase in spending
the Federal Government intends to reduce its own contribution
from just below 1% to 0.5% of the G N P .
Our research community would like very much to know what
other avenues of support your ministry has envisioned (e.g. private
industry, provincial Governments etc.), since we would like very
much to cooperate in arranging a smooth transition of funding.
M a n y areas of f u n d a m e n t a l research, basic to innovation in high
technology, require long s t a r t u p times for design and construction and 1985 is only t w o a n d one half years away.
We are looking f o r w a r d to your reply with keen interest.
Sincerely yours,
B. A h l b o r n
Professor of Physics
September 9, 1982
Dr. B. A h l b o r n
The University of British C o l u m b i a
6224 Agriculture R o a d
Vancouver, British C o l u m b i a
V 6 T 2A6
D e a r Dr. A h l b o r n :
T h a n k you for y o u r letter of July 12, mentioning that your
Council welcomes the federal g o v e r n m e n t ' s repeated c o m m i t m e n t
to raising C a n a d a ' s R & D f u n d i n g to 1.5% of the G N P by 1985.
In turn, I welcome the creation of y o u r C o m m i t t e e on R & D support to investigate the consequences of government policy on
basic research in physics. I n f o r m e d input f r o m the universities and
industry is extremely valuable in attaining the R & D f u n d i n g
target and in deriving the greatest possible economic and social
benefits f r o m increased R & D spending.
In response to your letter, let me first point out that the target level
of 1.5% of the G N P refers to total spending on all R & D in the
natural sciences a n d engineering in C a n a d a . This total is measured by our Gross Expenditure on R & D ( G E R D ) , and is compiled
by Statistics C a n a d a using internationally-accepted definitions.
G E R D includes spending on basic research, but also covers
expenditures on applied research and experimental development.
The federal g o v e r n m e n t ' s f u n d i n g contributions to G E R D
a m o u n t e d to 0.4% of the G N P in 1981. It is planned to increase
this figure to 0.5% by 1985, thus the federal g o v e r n m e n t ' s
contribution to natural sciences a n d engineering R & D will
increase in G N P terms. The figure of just below 1% which you
understood to be the current level of the federal contribution to
G E R D in fact represents the total f u n d i n g of G E R D by all
sectors — government, industry and universities — in the late
1970s. The a p p r o p r i a t e c o m p a r i s o n with this figure is, therefore,
the 1985 target figure of 1.5% of the G N P .
Using the economic projections in the N o v e m b e r . 1981 budget
papers, federal b u d g e t a r y expenditures on R & D in the natural
sciences and engineering must rise to over $3 billion in 1985,
c o m p a r e d with just u n d e r $1.8 billion in 1982/83, in order to
reach 0.5% of the G N P . It was pointed out in the g o v e r n m e n t ' s
1981 R & D Planning F r a m e w o r k that one of the purposes f o r
which the federal g o v e r n m e n t f u n d s R & D is the s u p p o r t of university research. In the f r a m e w o r k it was p r o p o s e d that approximately one-fifth of new federal R & D money should be spent in
this way. A large part of this increase will s u p p o r t f u n d a m e n t a l
research, as will increases in the f u n d i n g of some of the federal
g o v e r n m e n t ' s i n t r a m u r a l R & D activities, such as m a n y of those
of the National Research Council ( N R C ) .
Federal support of university R&D
has grown at a 17% per
a n n u m rate over the last five years, maintaining its approximately
20% share of total federal spending on R & D. Recently spending
by the N a t u r a l Sciences and Engineering Research Council has
grown m o r e rapidly than this, rising f r o m $121 million in 1979/80
to $227 million in 1982/83, a rise of 88%. Over the same period,
the N R C ' s budget rose f r o m $201 million to $361 million. I am
23
confident that you will agree that these figures show that, even in
times of severe budgetary restraint, the federal government has
recognized the i m p o r t a n t contribution of R & D to long-term
socio-economic objectives.
I enclose with this letter copies of some b a c k g r o u n d material
which your C o m m i t t e e m a y find interesting and helpful — the
i n f o r m a t i o n package released in J a n u a r y last year on the R & D
Planning F r a m e w o r k , a n d a publication describing the federal
g o v e r n m e n t ' s planned activities in science a n d technology for the
current fiscal year.
T h a n k you again for your letter. I look f o r w a r d to hearing the
results of your C o m m i t t e e ' s deliberations.
Yours sincerely,
J o h n Roberts
SAKHAROV S C H O L A R S H I P F U N D
The President of the S a k h a r o v International C o m m i t t e e , Sheldon
Lee G l a s h o w , has a n n o u n c e d the creation, in association with
many scientific organizations, of the " S a k h a r o v Scholarship
F u n d " to h o n o r and p r o m o t e the ideals of Nobel Peace Laureate,
Dr. Andrei S a k h a r o v , one of the world's great scientists and outspoken advocate of h u m a n rights.
The F u n d will a w a r d scholarships to qualified students dedicated
to the pursuit of S a k h a r o v ' s scientific and humanistic goals, and
prizes to scientists w h o , in addition to o u t s t a n d i n g achievements
in their fields, are also deeply devoted to the cause of h u m a n
liberty. It will also offer direct material assistance to scientists
persecuted for their advocacy of h u m a n rights.
F u r t h e r i n f o r m a t i o n may be obtained f r o m :
S a k h a r o v International C o m m i t t e e
c / o D e p a r t m e n t of Physics
102 McKinley Building
American University
Washington, D . C . 20016
Tel: (202) 364-0200
THE D E V E L O P M E N T OF SKILLS FOR ASIAN PHYSICISTS
A two-week " S u m m e r Seminar Designed to Strengthen Organization Skills of Physicists (Scientists) Returning to Developing
Asian C o u n t r i e s " is proposed for July 1 7 - 3 0 of 1983. It will be
held at St. Francis Xavier University, Antigonish, Nova Scotia in
conjunction with the C o a d y International Institute. Part of the
seminar will be held in Baddeck, Nova Scotia at the Alexander
G r a h a m Bell Centre.
One of the striking differences between scientists in the developed
countries and scientists in developing countries is that the latter
almost, without exception, while doing science simultaneously
have to work on creating an environment in which they can
effectively d o science. As a result, scientists in developing
countries need a special type of k n o w h o w that o u r colleagues
here at h o m e only occasionally need to develop, since such k n o w how is traditionally available through o u r scientific colleagues and
institutions. This consists of an u n d e r s t a n d i n g of science organization within their country, science m a n a g e m e n t , science policymaking, science planning, the creation of science institutions, the
response of science to social and economic problems, proposal
writing, the developing of multidisciplinary research c o m m u n i t y
and the development of the interface between h o m e institutions
with g o v e r n m e n t , industries, other universities and the local
c o m m u n i t y . The seminar will focus u p o n these things.
The p r o p o s e d seminar will be available to those physics g r a d u a t e
students, p o s t d o c t o r a l fellows and y o u n g faculty m e m b e r s f r o m
24
Physics in C a n a d a
eastern and southern Asia visiting in North America who can
demonstrate their willingness a n d / o r ability to return to their
home countries after their stay in North America. T o be eligible
for the school, each student must submit a mini curriculum vitae,
a paragraph outlining their plans, a letter of support f r o m an
Institution in his or her native country and a second letter of
support f r o m his or her Professor in North America. Scientists
from complementary disciplines may also apply.
A personal profile each student will encounter within his home
institution will be developed during this course. This technique
has worked effectively for nearly twenty-five years at the Coady
International Institute. Whenever possible case studies will be
used which demonstrate how science has developed within the
different countries of Asia. Particular emphasis will be placed
upon each student analyzing his home situation.
The majority of instructors will be established scientists in Asia
or others who have had significant experience there.
Each student will be given a grant covering living and accommodation in Nova Scotia plus full support for travel.
The selection committee has been made up of the instructors and
members of the Subcommittee on International Scientific Affairs
of the American Physical Society. Their decisions will be final.
All applications will be sent to:
Mr. Chester Ng, Student Coordinator
Dept. of Physics
The University of Western Ontario
London, Ontario N6A 3K7
The final date for application is 1 April 1983. Student acceptances
will be sent out 1 May 1983.
For further information please contact:
Mrs. Marilyn Adams
Summer Seminar Coordinator
Dept. of Physics
London, Ontario N6A 3K7
(519) 679-6332
or
Professor J. W m . M c G o w a n , Chairman
APS-POPA, Subcommittee on International Scientific Affairs
L o n d o n , Ontario N6A 3K7
(519) 679-6332
ERNEST C. MANNING AWARDS FOUNDATION
J
Canadian Physicists
Physiciens canadiens
À L ' U N I V E R S I T É D E M O N T R É A L . . . Un ancien étudiant du
Laboratoire de physique nucléaire, Bernard Haas (directeur de
recherche : prof. Paul Taras) a reçu cette année le prestigieux prix
Joliot-Curie décerné en France dans les domaines de la physique
nucléaire ou physique des particules élémentaires.
A T T H E UNIVERSITY O F W I N N I P E G . . . Dr. Benjamin G .
Hogg has been appointed Chairman of the Department of Physics,
effective October 1st, 1982, for a five year term. Dr. Donald W.
Kydon was appointed in late 1981 to the Science Council of
Canada for a three year term. Dr. Edward Tomchuk is on a halfyear sabbatical for the first part of 1983.
A T T H E UNIVERSITY O F W A T E R L O O . . . J o h n Hepburn,
NSERC Research Fellow and Research Assistant Professor of
Chemistry, has been cross-appointed to Physics and appointed to
membership in (GWP) 2 . His research interests include the photophysics of small molecules, multiple photon ionization and
vacuum ultraviolet lasers.
Further visitors to the Department of Physics during the academic
year, 1982-83, including the following:
Visiting Professors: Edixon Castro, from the University of
Carabobo, Venezuela, is working with the photo-voltaic group on
grain boundary problems in cadmium telluride films; Alex Opie,
from the Unviersity of New South Wales, Australia, is collaborating with J o h n Grindlay on the theory of non-linear coupled
systems.
Research Associates: O m a r Binbrek, f r o m the University of
Petroleum and Minerals, Saudi Arabia joins the spectroscopy and
lattice dynamics groups for work on molecular crystals; Rabi
M a j u m d a r , from the University of Delhi, India is collaborating
with Raj Pathria on phase transitions in biophysical systems.
Postdoctoral Fellows: Yutaka Okabe, from T o h o k o University,
J a p a n , is doing research with A.D. Nagi on the theory of superconductors; Andrew Smith from the University of Manchester,
England, is working with Wing-Ki Liu on problems of resonance
in molecular scattering.
Donald A. Ramsay, F.C.I.C. has been awarded an H o n o r a r y
Doctor of Science degree from the University of Stockholm. He
has also been awarded a Centenary Medal of the Royal Society
of Canada.
The Ernest C. Manning Awards Foundation, formed two years
ago to promote and reward innovation by Canadians, is now
accepting nominations for its 1983 Award.
The Foundation presents at least one $75,000 award each year to
a Canadian who has shown outstanding talent in conceiving and
developing a new concept, process or product which is of potential
widespread benefit to Canada.
A nominee for the Award must be a Canadian citizen resident in
Canada, and must be nominated by at least two people. An information pamphlet concerning the 1983 Award, together with a
Nomination F o r m , can be obtained by writing to:
Ernest C. Manning Awards Foundation
Suite 2300, 639 - Fifth Avenue S.W.
Calgary, Alberta T 2 P 0M9
The deadline for receipt by the Foundation of nominations for
the 1983 Award is March 31, 1983.
Calendar/Calendrier
FIFTH ANNUAL MEETING O F T H E ONTARIO SECTION
O F A APT, 1 5 - 1 7 June, 1983, Department of Physics, University
of Waterloo. Papers on any aspect of physics instruction at either
high school or University level are invited. Please submit title and
abstract to:
Dr. T . D . Gaily,
Department of Physics,
University of Western Ontario,
London, Ontario. N6A 3K7.
Deadline for abstracts is 15 April 1983. Program details and
accommodation information will be available after 1 May 1983.
La Physique a u C a n a d a
SEVENTH
INTERNATIONAL SYMPOSIUM ON
QUADRUPOLE
RESONANCE,
University, Kingston, Ontario,
11-14
July,
NUCLEAR
1983,
Queen's
Books Received/Livres
Canada.
T h e S y m p o s i u m will c o v e r a l l a s p e c t s o f n u c l e a r q u a d r u p o l e
r e s o n a n c e a n d q u a d r u p o l a r e f f e c t s in m a g n e t i c r e s o n a n c e . P a p e r s
o n o t h e r a s p e c t s o f n u c l e a r q u a d r u p o l a r i n t e r a c t i o n s will a l s o b e
c o n s i d e r e d . T h e p r o c e e d i n g s o f t h e S y m p o s u r n will b e p u b l i s h e d
in full.
The following books have recently been received for
review. Readers are invited to write reviews of books
of interest to them. Books may be requested from the
Book Review Editor, J.P. Svenne, Department of Physics,
University of Manitoba, Winnipeg, Manitoba R3T 2N2,
telephone (204) 474-9856.
00
F o r f u r t h e r i n f o r m a t i o n write to:
Dr. R.J.C.
Chemistry
Queen's
Brown,
University,
K7L
General
Directory of Publishing Sources: The Researcher's Guide
to Journals in Engineering and Technology, by
S. Balachandran. Wiley-Interscience, 1982; pp. 343
Price: U.S. $27.50
Department,
Kingston, Ontario, Canada
reçus
3N6
02 - 05 Mathematical/Theoretical Physios
Cartesian Tensors, by A.M. Goodbody. John Wiley & Sons
(Halsted Press) 1982; pp. 298. Price: U.S. $75.00
C A P / N A T O A D V A N C E D S T U D Y I N S T I T U T E on " M o m e n t
F o r m a t i o n in S o l i d s " , A u g u s t 2 1 - S e p t e m b e r 3, 1 9 8 3 , L e s t e r B.
Pearson College of the Pacific, V a n c o u v e r Island, B.C.
For further information, please contact:
Dr. W.J.L. Buyers
A t o m i c E n e r g y of C a n a d a L i m i t e d
Chalk River Nuclear Laboratories
C h a l k R i v e r , O n t a r i o K O J 1 JO
(Telephone: (613) 584-3311)
Elements of Group Theory for Physicists, 3rd Ed. by
A.W. Joshi. John Wiley & Sons (Halsted Press) 1982;
pp. xili + 334. Price: U.S. $16.95
Understanding the Space-Time Concepts of Special
Relativity, by A. Evett. John Wiley 4 Sons, 1982;
pp. x + 162. Price: U.S. $19.95
General Relativity: An Introduction to the theory of
the gravitational field, by H. Stephani (tr. by
M. Pollock and J. Stewart). Cambridge University
Press, 1982; pp. xvi + 298. Price: U.S. $49.50
20 - Nuclear Physios
Essentials of Nuclear Chemistry, by H.J. Arnikar, John
Wiley & Sons (Halsted Press) 1982; pp. xii + 335.
Price: U.S. $17.95
Nuclear Reactors Built, Being Built, or Planned, as of
Dec. 31, 1981, U.S. D.O.E., eds. Technical
Information Centre, D.O.E., 1982; pp. 45.
Price: U.S. $10.00
La chimie laser
30 - Atomio and Molecular Physios
suite de la page
Surface Enhanced Raman Scattering. R.K. Chang and
T.E. Furtak, eds. Plenum Press, 1982; pp. viii
+ 423. Price: U.S. $49.50
8
14. F.Y. W u et al.. Investigation of the S p e c t r u m of R e s o n a n c e F l u o r e s cence by a M o n o c h r o m a t i c Field, Phys. Rev. Lett. 35, 1426 (1975).
15. C. C o h e n - T a n n o u d j i , d a n s F r o n t i e r s in Laser Spectroscopy (Ecole
d ' é t é les H o u c h e s 1975, édit. R. Balian, S. H a r o c h e ( N o r t h H o l l a n d ,
A m s t e r d a m 1975)).
16. A D . B a n d r a u k , M . L . Sink, P h o t o d i s s o c i a t i o n in Intense Laser Fields,
J . C h e m . Phys. 74, 1110 (1981).
17. A . D . B a n d r a u k , M.S. Child, Analytic T h e o r y of Predissociation f r o m
Scattering T h e o r y , Molec. Phys. 19, 95 (1970).
18. A . D . B a n d r a u k , G . T u r c o t t e , Intense Field R e s o n a n c e R a m a n
Scattering by a M o l e c u l a r C o n t i n u u m — A C o u p l e d E q u a t i o n s
S t u d y , (soumis a u J. C h e m . Phys. (1982)).
19. A . D . B a n d r a u k , G . T u r c o t t e , R. Lefebvre, R e s o n a n c e R a m a n
Scattering by a Predissociative State: A Study of N o n a d i a b a t i c
Effects, J . C h e m . Phys. 76, 225 (1982).
20. G . H e r z b e r g , Electronic Spectra of P o l y a t o m i c Molecules (Van
N o s t r a n d , N.Y. 1966).
Atomic Radiative Processes, by P.R. Fontana. Academic
Press, 1982; pp. xv + 270. Price: U.S. $32.50
Atomic and Molecular Collision Theory. Proceedings of
a NATO Advanced Study Institute, Arezzo, Italy,
Sept. 1980. F.A. Gianturco, ed. Plenum Press,
1982, CONF: pp. viii + 505. Price: U.S. $59.50
42 - Optics
Light and Color, by R.D. Overheim and D.L. Wagner.
John Wiley & Sons, 1982; pp.
+ 269.
Price: U.S. $18.95
Elements of Optical Coherence Theory, by A.S. Marathay.
John Wiley & Sons, 1982; pp. xx + 316.
Price: U.S. $39.95
60/70 Condensed Matter
Excitations in Disordered Systems. Proceedings of A
NATO Advanced Study Institute, Michigan State
University, Aug.-Sept., 1981. M.F. Thorpe, ed.
Plenum Press, 1982, CONF; pp. xiv + 704.
Price: U.S. $85.00
SO - Cross Disciplinary Physics
Electronics with Digital and Analog Integrated Circuits
by R.J. Higgins. Prentice-Hall, Inc., 1983;
pp. xiv + 605. Price: U.S. $29.95
Physics of Semiconductor Devices. Proceedings of the
International Workshop, November, 1981, New Delhi,
India. S.C. Jain and S. Radhakrishna, eds. John
Wiley 6, Sons, 1982, CONF; pp. ni
803.
Price: U.S. $54.95
Advances in Chemical Physics, vol. LI. I. Prigogine
and S.A. Rice, eds. John Wiley & Sons, 1982;
pp. ix + 289. Price: U.S. $50.00
25
26
Physics in Canada
Introduction to Optical Fiber Communications, by
Y.S. Ken-Ichi Iga (tr. by H. Matsumura, edited
and revised by W.A. Gambling) John Wiley & Sons,
1982; pp. xviii + 208. Price: O.S. $29.95
Principles of Lasers, 2nd Ed., by 0. Svelto (Tr. by
D.C. Hanna) Plenum Press, 1982; pp. xv + 375.
Price: U.S. $29.50
Book Reviews
Critiques des livres
ACOUSTIC, ELECTROMAGNETIC AND ELASTIC WAVE SCATTERING
- FOCUS ON THE T-MATRIX APPROACH. V.K. Varadan and
V.V.' Varadan, eds. Pergamon Press, 1980; pp. xii +
693. Price: U.S. $70.00
This book is a collection of papers presented at an
international symposium held at Ohio State University,
Columbus, Ohio on June 25-27, 1979. The subject matter,
the classical scattering and propagation of waves, is
one which is highly specialized and yet is of interest
to mathematicians, physicists and engineers. The papers
cover a variety of research in the areas of acoustics,
electromagnetics and elastodynamics, including discussions
of both mathematical and computational techniques. The
focus of the material presented is concerned with the
T-matrix approach to the classical scattering problem.
The T-matrix approach is based on P.C. Waterman's
extended boundary condition approach to the problem of
classical wave diffraction. The basic concepts of this
approach are reviewed in a paper by R.H.T. Bates at the
beginning of the book. The approach has potential
applications in all three areas of single and multiple
scattering and this symposium has helped to demonstrate
the full potential and limitations of this technique in
comparison with other better known methods such as the
geometrical theory of diffraction, the moment method,
the finite element method, and the singularity expansion
method.
An introductory chapter on the differential and integral
representations for acoustic, electromagnetic and elastic
fields is included. The remainder is organized into 10
sections: T-matrix approach- single scattering and
multiple scattering; computational aspects of the
T-matrix; moment methods, geometrical theory of diffraction, resonances and singularity expansions, finite
element method, multiple scattering theories, experimental
methods and inverse scattering analyses, and special
topics. A total of 37 papers are included.
For those working in this field, this book would certainly serve as a useful reference. It is highly specialized,
however, and would not be useful as an introduction to
the field.
R.J. Hodgson
University of Ottawa
GRAPH THEORY AND APPLICATIONS, by H.N.V. Temperley.
Halsted Press, 1981; pp. 130. Price: U.S. $44.95
La présentation de ce volume en fait un outil de grande
valeur pour l'ensemble de la population scientifique
oeuvrant dans le contexte moderne de la recherche
appliquée. Le cheminement suivi par l'auteur illustre
bien les liens unissant le monde abstrait des sciences
mathématiques à celui auquel est confronté l'ingénieur ou
le scientifique chargé d'appliquer la puissance de l'abstraction à la solution de problèmes réels.
En moins de 130 pages le professeur Temperley parvient à
présenter clairement la théorie des graphs, à en démontrer
la pertinence dans des champs d'applications allant de la
mécanique statistique à l'analyse des jeux en passant par
la solution des courants électriques de circuits résistifs
et à convaincre de l'importance et de l'intérêt de
l'utilisation de cet outil mathématique.
Le seul point faible de cet ouvrage se retrouve malheureusement dans la section « définition» du premier
chapitre. Bien qu'un certain effort de présentation
pratique se remarque par l'utilisation de caractères
différents pour les mots clefs, on ne peut qualifier
d'invitant l'aspect magistral de l'introduction ainsi obtenue.
Le lecteur a intérêt à persévérer puisque la récompense
pour son effort l'attend déjà à la section suivante.
Dans l'ensemble on peut dire que ce volume s'adresse
autant aux chercheurs et aux étudiants de deuxième et
troisième cycle de physique, de chimi-physique, de
chimie et de sciences liées aux mathématiques numériques
qu'aux ingénieurs impliqués dans les recherches opérationnelles ou les sciences de la terre. De fait, essayer
de cerner le domaine d'application exact de cette technique ne peut qu'entraîner l'omission fortuLte de champs
pourtant parfaitement pertinents. X titre d'exemple,
mentionnons la gestion scientifique technique et
financière de programmes de recherche industrielle dont
l'analyse se prête bien à l'application de la théorie
des graphs.
L'ouvrage se termine par la présentation de prés de
cinquante références pertinentes au texte principal
qu'appuient treize autres titres mentionnés pour lectures
supplémentaires. Il est ainsi possible, au lecteur
désireux d'approfondir ce sujet de parcourir d'un simple
coup d'oeil, un éventail de titre remontant jusqu'à 1857.
Personnellement je recommande la lecture de ce volume
puisque l'exercice mental suscité par l'analyse des
exemples et des problèmes présentés convaint de l'utilité
de cette technique mathématique.
Raymond Roberge
Gen-Tec, Inc.,
Québec.
PRINCIPLES OF QUANTUM MECHANICS, by'R. Shankar. Plenum
Press, 1980; pp. xviii + 612. Price: U.S. $29.50
Every author of a new text on quantum mechanics in the
last few years seems to feel it necessary to first of all
justify the need for a new book on the subject. The
author of this text is no different, and feels that the
approach used is sufficiently unique and beneficial. I
tend to support his claim, in that the development of the
subject starts from first principles, namely the required
mathematics, and then proceeds to discuss classical
mechanics, its failures, and then the postulates of quantum
mechanics. This type of approach is becoming more common,
as is evidenced in other books by Liboff, and CohenTannoudji et al.
This text starts out in chapter 1 by treating vector
spaces and the Dirac notation at a level which can be
readily handled by senior undergraduate students. The
treatment is also in a form which is already familiar to
most students studying physics, and is not a rigorous
mathematical treatise. Three appendices dealing with
matrix inversion, gaussian Integrals, and complex numbers
complement this chapter in providing the required mathematics.
The next two chapters cover the essential material of
classical mechanics, Including a nice discussion of symmetries, and why classical mechanics fails to describe
many phenomena. This leads into a presentation and
discussion of the postulates of quantum mechanics in
chapter 4. This chapter, I thought, was well presented.
After describing a few postulates, a detailed discussion
of the consequences, and the complications attached to
these postulates is presented. Included is a discussion
on the density matrix.
The author then proceeds to apply these postulates to the
standard areas, starting in one dimension with the freeparticle propagator, and the scattering off a step potential using the a wave packet approach. A short chapter
is included on the classical limit, and then he proceeds
to the harmonic oscillator.
It was particularly nice to see that a chapter had been
included dealing with Feynman's path integral method.
It is surprising that such an elegant and useful tool
is omitted from most books on the subject. The freeparticle propagator is evaluated explicitly, and the
equivalence of this method to the Schrodinger equation
is demonstrated.
The material covered includes angular momentum and spin,
perturbation methods, scattering theory, and the Dirac
equation. Exercises are included in the body of each
chapter, to assist the student in understanding the
concepts as they are covered. Many of the exercises
have the answers provided in them, or at the end of the book.
The writing style, and the notation and layout used make
this text an easy one to read. It can be used as an
undergraduate course text, with the omission of some
material to reduce the length, or would make a very
good text for a full-year graduate course.
R.J. Hodgson
University of Ottawa.
AN INTRODUCTION TO GENERAL RELATIVITY , by S.K. Bose.
Halsted Press, 1981; pp. xii + 128. Price: U.S. $9.95
(paper)
This is a small book, which might at first view invite
comparison with the splendid but outrageously expensive
little book of Dirac. The present volume would, however,
suffer from such a comparison, since Bose, unlike Dirac
(to say nothing of Weinberg or the splendid team of
Misner, Thorne and Wheeler) has no special viewpoint to
bring to bear on the subject.
It is therefore somewhat of a hodge-podge, and is quite
uneven in quality of presentation. One's suspicions are
aroused early, by the discussion on pages 3 and 4 of the
rigidly rotating disc. Here, it is said that, if the
measurement of the circumference of the disc by an
observer moving with it is viewed by an outside observer,
that outside observer will note a Lorentz contraction
of the measuring rod, which will affect the result of
the measurement. It is not explained why the distance
being measured is not also contracted by the same amount.
Some pages later, the equation for spatial distances in
special relativity is given. The statement is then
made that "it is not, in general, possible to integrate
d£ and obtain the spatial distance of two finitely separated points. Only when the integral is independent of
the path of integration does the concept of finite distance exist". A literal interpretation of this sentence
would lead us to conclude that the concept of finite
distance does not exist in a flat Euclidean space.'
These may seem minor quibbles, so let us push on, noting
that the second remark under "the principle of general
covariance" gives us a "precise prescription" for an
unprecise operation "(Introducing) gravitational forces
into a physical situation" by an unspecified procedure
("make them (the equations) generally covariant"). This
presumably means that we can get generally covariant
equations by arbitrary coordinate transformations from
the local inertial frame, but such an interpretation is
only inference.
The author's avowed effort to "ignore mathematical subtleties" and use a "bare minimum of mathematical apparatus"
sometimes leads to unmotivated and arbitrary mathematical
juggling. No idea appears to underlie the introduction of
covariant differentiation; it is very much a "rabbit out
of a hat" operation. The concept of parallel transport
is never mentioned and the Riemann tensor is discussed
quite mechanically, without any mention of a relation to
curvature.
One could go on citing examples of what is unsatisfying
about this book, primarily careless writing and a lack
of communication of real insight into the subject. As
redeeming features,one might commend the author for his
inclusion, in a small book, of the problem of particle
motion around rotating black holes, and a.fairly comprehensive discussion of stellar structures and gravitational
collapse.
Missing, on the other hand, are any significant discussions
of black hole thermodynamics or, - most surprisingly the cosmic background radiation.
There is still room in the market for a good compact,
modern and physically oriented book for first courses
in the general theory of relativity. The present one
does not qualify.
P.R. Wallace
CNRS, Service des Champs
Magnétiques Intenses,
Toulouse, France.
GROUP SYMMETRIES IN NUCLEAR STRUCTURE, by J.C. Parikh.
Plenum Press, 1978; pp. ix + 277. Price: $33.50
Sooner or later, as advances in mathematics are transferred to physics, what started as calculational convenience leads to new insights. Because of the predominant
role that the idea of symmetry plays in so much of our
work, it is not surprising that the associated mathematical ideas - group theory - are being introduced at an
increasing pace. Whether practicing physicists can
assimilate them as quickly is quite another matter!
Parikh's book is an attempt to introduce some of the
symmetry groups presently used in nuclear physics to
practitioners in the field. In the introduction, it
is claimed that "all" these groups will be discussed:
namely, the unitary groups, isospin, Wigner supermultiplets, SU(3) and seniority. Although the book was published in 1978, it is (amazingly) already out of date,
since no mention is made of the currently fashionable
groups arising out of Iachello and Arima's Interacting
Boson Approximation (such as SU(6) and 0(5) ). Neither
are the non-compact groups introduced by D. Rowe and his
collaborators discussed, such as Sp(3,R) and its derivatives.
These omissions probably result from the book being an
essentially unchanged re-write of Parikh 1 s lecture notes
from his Rochester graduate course of over 10 years ago.
It is a pity that there was no opportunity for updated
material of this nature to be included.
Nevertheless, the book is a useful one, leading the
reader slowly and quite painlessly from definitions and
elementary theorems through to useful results. The
emphasis is on simple applications throughout, and
analytical formulae are often presented. The Rochester
penchant for spectral distribution methods does not go
ignored, sometimes to the disadvantage of more traditional
nuclear structure calculations. It is a pity, for example,
that the very substantial achievements of K.T. Hecht,
D.J. Millener and J.D. Vergados (among others) in
applying the full shell model "paraphernalia" of SU(3),
such as matrix elements, Clebsch-Gordan coefficients,
c.f.p.'s, etc., to realistic p and sd shell nuclei could
not have been acknowledged. Perhaps this was considered
"technology" and best left for further reading. Yet
none of this found its way into the (overly brief)
references, largely because no work later than 1972 is
quoted - very eccentric - considering that the book was
published six years later.
The book is probably most useful as an introduction to
the subject for, say, second year graduate students, who
will need to be carefully guided through the maze of
recent literature by a sympathetic instructor - no small
feat.' It is, unsurprisingly, well produced by Plenum,
and misprints are hard to find. The notation is not
always that used by more contemporary writers, however,
and tables of results use two-body interactions now
well out of date; thus, some of the discrepancies between
theory and experiment mentioned by the author may be
resolved with modern interactions.
Still, a knowledge of the first third or so of this
book, plus judiciously chosen sections from the remainder,
should leave the reader armed with the weapons and courage
to face, without flinching, the many new groups now
bursting on the scene!
A.A. Pilt,
Tandem Accelerator Laboratory,
McMaster University.
AN INTRODUCTION TO NUCLEAR PHYSICS WITH APPLICATIONS IN
MEDICINE AND BIOLOGY, by N.A. Dyson. John Wiley & Sons
(Halsted Press) 1981; pp. 244. Price: U.S. $54.95
The preface describes this book as of interest to
undergraduates, postgraduates and practitioners of medical
physics, as well as students of other disciplines needing
to develop their nuclear physics to a more useful level.
The reviewer believes it will meet the needs of none of
its intended audience.
The first four of the seven chapters covers the usual
nuclear physics material: interactions of radiation and
matter, nuclear reactions and isotope production,
radiation detectors, and radioactive emissions. The
treatment is formal and more advanced than usual for a
medical physics text, with few concessions to the non-
27
28
Physics in Canada
physicist. The liberal use of mathematical equations
with frequently unexplained variables and terminology
will guarantee confusion in any medical reader. A medical
resident who pales at the sight of a simple exponential
will surely become catatonic when confronted with the
Bethe-Bloch expression for energy loss.1
Chapter five, which describes the uses of radionuclides
in medicine appears to have been written in 1972, and if
taken seriously by the uninformed, could almost be
described as hazardous to the health. The section on
iodine and thyroid function uses 1962 data and conclusions
which have long since been modified (at least in North
America) by the iodination of table salt.
Other sections of this chapter state that "up to 19 photomultipliers are used in some (gamma cameras)" and
"Radioisotopes used for brain scanning include 1-131,
As-74 and Tc-99m. This last radioisotope (emits) gamma
rays of 190 kev..." As any medical physicist will know,
modern gamma cameras have at least 37 P.M.T.'s; 1-131
and As-74 disappeared as brain scanning agents sometime
before brain scanning itself almost disappeared under the
onslaught of the X-ray CT scanner, and Tc-99m, the most
widely used medical radionuclide, emits 140 kev gamma
rays. I would have assumed the last error to be a misprint
were it not repeated elsewhere in the book.
The use of positron emitters is mentioned briefly and an
early (I960) paper by the author referenced, but no
modern developments of Positron Emission Tomography or
indeed any kind of tomography, are described.
Nuclear Magnetic Resonance is not mentioned anywhere.
Radiation dosimetry receives a rather disjointed treatment with sections scattered throughout several chapters,
and no reference to I.C.R.U., I.C.R.P. or M.I.R.D. publications.
In conclusion, the book is too advanced for the nonphysicist and too out-of-date or Irrelevant for the practical medical physicist and cannot be recommended to
either.
E.W. Spiers
Division of Nuclear Medicine,
Toronto General Hospital.
THE NUCLEAR MANY-BODY PROBLEM, by P. Ring and P. Schuck.
Springer-Verlag, 1980; pp. xvii + 716. Price: U.S. $46.00
This is really quite a remarkable book. In under 600
pages (excluding appendices, references and index), it
manages to review essentially the whole of modern nuclearstructure theory — not only the many-body theory indicated in the title, but also the conventional nuclear
models. The authors accomplish this by some very tight,
concise writing, by extensive cross-reference to other
places in the book, and by outlining only the main steps
in derivations, leaving the details for the reader to
fill in or look up in the references.
The first three chapters and chapter 6 deal with nuclear
models: liquid drop, shell model, collective motion and
pairing. The shell-model chapter includes the deformed
single-particle potential of Nilsson and the shell corrections to the liquid drop model introduced by Strutinsky
and collaborators. The manner of presentation of the
models and the notation used are designed to prepare the
reader for the microscopic many-body theories in subsequent chapters.
Chapter 4 deals with nuclear forces. After a very quick
discussion of the free nucleon-nucleon interaction, effective interactions in nuclei are discussed. These include
the Brueckner G-matrix and density-dependent interactions.
Most of the remaining chapters present the various manybody formalisms used in nuclear structure theory: Chapter
5 on Hartree-Fock, chapter 7 on Hartree-Fock-Bogoliubov,
chapter 8 on Tamm-Dancoff and RPA, chapter 9 on boson
expansions, chapter 10 on the generator-coordinate method,
and chapter 12 on the time-dependent HF and adiabatic
TDHF. Not only are these formalisms presented in a clear,
concise manner, but critiques of their validity and
applicability to various questions in nuclear structure
are given. An example of such a critique is the careful
evaluation on pp 493-499 of the advantages and restrictions of the TDHF.
Chapter 11 deals with broken symmetries in the many-body
theories and restoration of these symmetries by projection methods. The final chapter, 13, deals with semiclassical approaches, including the Thomas-Fermi theory,
Wigner-Kirkwood expansions and fluid-dynamic techniques.
There is also a set of appendices setting forth various
more mathematical topics in some detail.
According to the Preface, the book is "directed towards
students who have had a conventional course in quantum
mechanics and have some basic understanding of nuclear
phenomena." This is, in my opinion, understated. The
course in quantum mechanics would have to be an advanced
one, and the student should have had at least a first
course in nuclear theory to be able to benefit from this
book. The next sentence in the preface is closer to
the mark: "Our intention has been to close the gap
between the usual graduate lecture course and the literature presented in scientific journals." That this
book does admirably well. To this end, there is a
selected, but extensive list of some 1200 references to
the scientific literature up to 1980. The only important area of modern many-body theory that lias been left
out is the exp{S} formalism pursued by Zabolitzky and
co-workers. Except for this omission, this book represents
the state of the are of nuclear many-body theory.
J.P. Svenne,
University of Manitoba.
PHYSICS PROBLEMS FOR PROGRAMMABLE CALCULATORS: WAVE
MOTION, OPTICS AND MODERN PHYSICS, by J. Richard Christman.
John Wiley, 1982; pp. 301-609 v.2. Price: U.S. $7.95
(paper)
This is the second volume of a supplement for the excellent
textbooks of Halliday and Resnick, Physics and Fundamentals
of Physics. The first volume was reviewed some months ago
in Physics in Canada (37, No. 6).
As one might deduce from the title, the subjects of this
book are rather straightforward. The wave motion chapters
cover wave motion on strings and sinusoidal waves; the
optics chapters cover reflection refraction, interference
and diffraction; the modern physics chapters cover relativistic kinematics and dynamics, the photon, an introduction to the Schrodinger equation and a few topics in
solid state and nuclear physics.
This volume is well written. The material is covered
concisely, but very clearly. There is no index - a
potential drawback. The problems themselves are quite
standard. Some are quite challenging; most are of the
"find the right formula type". Some of the more interesting problems and features include: the effect of random
phases on interference patterns, the use of matrices for
reflection and refraction, and the calculation of energy
levels for simple systems. The calculators are used, in
the main, to take the drudgery out of calculating graph
points. Students are actively encouraged to notice the
results of their simulations, as significant variations
are pointed out by Christman. (e.g.: the widening of the
central maximum in a single slit diffraction pattern as the
slit is closed) Programs themselves are given in the form
of flowcharts and are carefully explained. Students should
be familiar with their calculator's style of programming
before attempting to use this book.
The book is aimed at more advanced first year and beginning second year students. Ordinary first year students
will find the material rough going.
I would recommend Christman's book for more ambitious
students.
Grant Mcintosh
Physics Department,
University of British Columbia.
CURRENT TRENDS IN OPTICS. Invited Papers from the I0C-12
Meeting, Graz, Austria, 1981. F.T. Arecchi and
F.R. Aussenegg, Halsted Press, 1981; pp. vii + 190.
Price: U.S. $34.95 (paper)
This volume consists of a collection of seventeen invited
papers presented at the Twelfth Congress of the International Commission of Optics held in Graz, Austria between
31 August to 5 September, 1981. The Congress served concurrently as the 1981 European Optics Conference, the
International Optical Computing Conference and the
Astronomical Optics Conference. The contributed papers
to this meeting have appeared in a special issue of
Optica Acta (Vol. 29, No. 4, 1982).
The papers in this book have been grouped in eight sections. The three papers in the first section are the general overviews of the prospectives of quantum electronics
and fibre optical communication (Kogelnik), the prospects
of solar energy (Meinel and Meinel) and the astronomical
optics in China (Ningsheng). The section on Astronomical
and Space Optics has also three papers which deal with
the interferometric methods in Astronomy (Labeyrie;
Weigelt) and the options for the next generation
telescope (Meinel and Meinel). The next section, after
an introductory paper on the unconventional image formation and information processing (Tricoles and Farhat),
discusses, in particular, the topics such as interactive
processing for image restoration (Ichioka), optical
matched filtering in noncoherent illumination (George
and Morris) and image reconstruction for steller interferometry (Fienup). Testing of cameras for use at high
resolution (Burch) and telecommunication through optical
fibres (Catania) are the subjects dealt in the two subsequent sections. The solitary paper on non-linear
materials provides a molecular engineering approach
towards the design of efficient organic crystals for
three-wave mixing (Zyss). The section on optical materials contains assorted topics like optical figuring
using elastic relaxation method (Lemaitre), phase conjugation, real-time holography and degenerate four-wave
mixing in photorefractive BSO Crystals (Huignard) and
image processing via electro-optic photosensitive media
(Petrov). Finally, the only paper in the section on
Quantum Electronics is concerned with the techniques of
phase conjugate optics (Yariv).
Essentially most of the papers in this book are brief
reviews emphasizing the work done at the authors' laboratory. Nevertheless, the papers do provide excellent
references for a follow-up reading. Furthermore, the
illustrations in the form of schematic diagrams, graphs
and photographs are adequate and the quality of their
reproduction is extremely good.
Finally, this 200-page soft-cover book is a photo-reproduction, on reasonably good quality semi-glossy paper,
of the individually typed manuscripts. Canadians will
find it at U.S. $34.95 exorbitantly overpriced.
C.P. Grover
Optics Section,
National Research Council.
MASTER OPTICAL TECHNIQUES, by Arthur S. De Vany. John
Wiley & Sons, 1981; pp. viii + 600. Price: U.S. $55.00
The production of optical instruments is an exacting
science, subject to the vagaries of material, equipment
and personnel. Generally, all aspects of production
require skills and experience accumulated over a number
of years. De Vany has written a textbook for opticians
which provides a basis for the development of these skills.
The book is divided into four sections. Part one describes the primary steps in production such as the roughing
out and polishing of glass blanks. This section also
includes a piece on hand polishing. Part two, entitled
'Fabrication of Prisms and Lenses' is devoted to the
study of production of prisms and the use of internal
collimation for the checking of prism angles. Part three
discusses the production of elements for telescope systems
such as the Schmidt Camera. The Schmidt design is
presented for the benefit of amateur telescope makers.
Lastly, part four outlines testing techniques such as
the Foucault Knife Edge Test, interferometric testing and
analysis of interferograms and ronchigrams. There are twentytwo appendicies that contain a great deal of information; e.g.:
a list of prism configurations (with reference to the
Frankfort Arsonel), silver coatings and pitch formulae.
Mr. DeVany has written a very detailed textbook, complete
with exercises at the end of each chapter. His style is
a bit dry, and the book reads like a recipe book, but he
gives some interesting background notes that provide some
historical context. This book is written at a college
level, but I feel it is a bit advanced for a first course.
Practicing opticians would find it a good source of tech-
nical information on many of the more obscure points of
their profession.
Frank Johnston
Midland, Ontario.
QUASIPARTICLES: Ideas and principles of solid state
quantum physics, by M.I. Kaganov and I.M. Liftshits.
Mir Publishers, Moscow, 1979; pp. 96. Price: $2.10
This short volume by two eminent Soviet physicists can
be regarded as a review of the basic concepts involved
in the quantum physics of the solid state. It should
provide a useful reflection for graduates of a formal
course in solid state physics who will be able to appreciate this masterful overview. Such readers will also be
able to interpolate past a few small quirks of the translation (which is generally good). The topics covered in
90 compact pages include photons, Bose and Fermi gases,
phonons, magnons, electrons and holes in various types
of solid, Landau Fermi liquids, plasmons, excitons,
polarons, quasi-particle interactions, phase transitions,
quantum crystals, superconductivity, superfluidity and
molecular biology.
P.D. Loly,
University of Manitoba.
PULSED NEUTRON SCATTERING, by C.G. Windsor. Taylor and
Francis, 1981; pp. xi + 432. Price: U.S. $85.00
During the past forty years, the technique of thermal
neutron scattering has found many important applications
in condensed-matter physics, chemistry, metallurgy, and
biology. Virtually all of this work has been performed
with neutron beams from thermal fission reactors. However, the point has now been reached where it would be
prohibitively expensive to build reactors with significantly higher neutron fluxes than are currently available
so that people are turning increasingly to acceleratorbased pulsed sources. This has required the simultaneous
development of novel time-of-flight methods that are quite
different from those used with thermal fission reactors.
Colin Windsor's book provides a timely and important
contribution to the neutron literature inasmuch as it is
the first book that attempts to provide a detailed and
comprehensive discussion of all aspects of pulsed neutron
scattering. The jacket asserts that the book "is intended
as a handbook for those wanting to use this new technique".
It will certainly be valuable for this purpose especially
since it deals with material that is usually omitted in
research papers in journals and is available, if at all,
only in internal reports and conference proceedings. The
style of the book is quite informal with numerous figures
and illustrations. The author attempts to explain things
in the simplest possible terms so that it should be
understandable to anyone interested in the subject.
The book is devoted entirely to the current state of the
subject so that the reader will obtain little knowledge
of, nor is its author apparently aware of, its historical
development. For instance, the author states in Chapter
1 that "it is interesting to speculate on how neutron
scattering might have developed if accelerator-based
pulsed sources had come before reactors". In fact, they
did. A pulsed accelerator neutron source was used in
conjunction with the time-of-flight technique by P.B.
Moon and co-workers at Imperial College, London in 1938
to verify that thermalized neutrons did indeed obey the
Maxwell-Boltzmann distribution. In the same year, Alvarez
used the Berkeley cyclotron to demonstrate that the
neutron absorption In boron follows Fermi's 1/v-law.
Modern pulsed neutron sources were first developed in the
1960's in an attempt to extend the useful lifetime of
electron linacs that had become redundant for their original purpose. The characteristic feature of such sources
is the intense epithermal component in the undermoderated
energy spectrum. As a result, the major application has
until recently been total cross section measurements for
nuclear science and technology. However, with the
development of new instrumentation and the associated
data analysis techniques that are described in Windsor's
book, It is now also possible to obtain precise and
accurate measurements of the static and dynamic structure
factors which are of interest to condensed-matter physics.
29
30
Physics in Canada
The new pulsed spallation sources that are starting to
come on line will certainly emphasize this latter application and it is among the users of these sources that
Windsor's book will find its natural readership.
V.F. Sears
Atomic Energy of Canada Limited,
Chalk River, Ontario.
ELECTRON TRANSPORT IN COMPOUND SEMICONDUCTORS, by B.R. Nag.
Springer-Verlag, 1980; pp. xvi + 461. Price: U.S. $49.30
Why, one may ask, was this book written? There is,
perhaps, a shortage of books on the fundamental physics
of semiconductors; much has happened in the past dozen
years, and it would be reasonable to organize what we now
know (and what we know that we don't know) as an aid
to researchers in the field. Or, as an aid to students
at the graduate level making their first serious contact
with the subject. In either case, it seems to this
reviewer that the approach should be critical and
synthetic, rather than having the character of a handbook.
Dr. Nag's book falls short of meeting these needs in
several respects. Much of the material is classical and
Is better covered elsewhere; this is the case for most
of the topics of transport theory that he treats. A
surprisingly small proportion of the references are to
recent work. Eight pages at the end of the book discuss
"problems of current interest" in a perfunctory way;
here one finds mention (but scarcely more than that)
of such topics as superconducting alloys, magnetic quantisation phenomena in transport, inversion layers and
superlattices. Theory and experiment are poorly integrated
in the presentation. Chapter 12 is a highly selective
"review of experimental results", with a heavy bias
towards classical transport and with an almost total
neglect of what has been learned from optical measurements.
It is true that the theme of the book is transport, and
that is perhaps its major flaw; if one really wants to
understand materials, optical and transport studies must
complement each other, with the former in the dominant
position at the present time.
Optics does make an occasional appearance in the book all
the same, strangely under the rubric of low-field transport
coefficients. What is a low field? Cyclotron resonance
makes its appearance here; one does not usually consider
it a low-field phenomenon. The treatment is in any case
superficial, with no serious discussion of the conditions
necessary for the observation of the resonance, and no
mention even of the Az'bel-Kaner sort of resonance.
Problems involving mathematical difficulty or the use of
modern techniques are rigorously avoided; never a mention
of linear response, much less of Green's function methods.
Scattering problems are treated in Born approximation
with no critical appraisal.
In the chapter on transport in strong magnetic fields, the
treatment is as unsatisfying as it is confusing. Only
non-quantum problems, that is to say, those which can be
treated in some fashion by Boltzmann equation techniques,
are treated in any detail. Even here, it is stated that
the longitudinal magnetoconductivity can be satisfactorily
treated In this way, without acknowledgement of the fact
that this ignores completely quantum oscillations. The
fact that such oscillations can occur in the Hall coefficient is also not acknowledged. Ionized impurity
scattering is treated by quoting a complicated formula
without explanation: what is evident, however, is that
the effect of magnetic fields on the screening is similarly
ignored. The possibility of carrier freezeout in magnetic
fields is never mentioned. On several occasions, the
author erroneously reports the lack of quantitative
theories where such in fact exist (e.g. the magnetophonon
effect, where "recent" work of Barker in 1970 and 1972
is reported as "encouraging").
Although the pioneering work of Kubo on magneto-transport
problems is acknowledged In the references, any use or
discussion of such approaches is brushed aside as
"different from that presented here".
The result is confusion and disorganization. Simple
calculations by somewhat more sophisticated methods are
replaced by more complicated but less precise ones within
the author's framework, that of the Boltzmann equation
and Born scattering.
In short, this is a "cult" book which objures unified
approaches and the most powerful techniques available
(both conceptually and calculationally), in favour of an
often fearsome formal complexity unsupported by a critical
understanding of physical principles.
We are much better served by the usually excellent
articles of the encyclopaedic series of "Solid State
Physics". There is perhaps a lesson in that: for scientific publishers.
P.R. Wallace
CNRS, Service des Champs
Magnétiques Incenses,
Toulouse, France.
NEUTRON RADIOGRAPHY HANDBOOK. P. Von der Hardt and
H. Rottger, eds. D. Reidel Publ. Co., 1981; pp. x + 170.
Price: U.S. $26.00
Neutron radiography continues to be an active and industrially useful field, handicapped mainly by limited
availability of neutron sources of adequate intensity.
Though there has been an extensive report literature,
no comprehensive handbook has been written since Berger's
classic text of 1965. So the present slim volume is a
welcome attempt to fill the gap. It is divided into four
parts: 1. Principles and Practice of Neutron Radiography; 2. Recommended Practice for the Neutron Radiography of Nuclear Fuel; 3. Indicators for Testing of
Beam Purity, Sensitivity and Accuracy of Dimensions of
Neutron Radiographs; and, 4, Atlas of Defects revealed
in LWR fuel. The first chapter is the most generally
useful covering the basic sources, detectors, and design
considerations for radiography equipment. Though the
other much shorter chapters are strongly directed to
nuclear fuel inspection applications, they do contain
much useful information on procedural details, measurement techniques and calibration.
Unfortunately it is not always obvious how these procedures can be transferred to other types of industrial
radiography. Another major shortcoming is the almost
complete absence of any discussion of on-line image
display techniques and computer-aided image enhancement
methods, both of which currently are the subject of
intensive development. There is also very little discussion of the importance of the neutron spectrum in
the radiography of different types and thicknesses of
specimens and how spectra with different energy distributions might be obtained. These subjects clearly await
the writing of a new, more comprehensive textbook.
Despite these shortcomings, the present book can be
recommended as a handy reference and an update on the
techniques and procedures of neutron radiography, a
technology that deserves to be known and applied much
more widely than it is at present.
Geoffrey G. Eichholz
School of Nuclear Engineering
and Health Physics,
Georgia Institute of Technology,
Atlanta, Georgia.
AN INTRODUCTION TO SOLAR ENERGY FOR SCIENTISTS AND
ENGINEERS, by S. Wieder. John Wiley and Sons, 1982;
pp. xii + 301. Price: U.S. $24.95
This textbook is intended to provide a comprehensive
survey of the physical principles necessary to introduce
pure and applied scientists to the application of solar
energy. The flaps of the dust cover suggest that It is
intended to be the text for a one semester course for
junior or senior level students and that the only prerequisites are a year each of calculus and general physics.
This reviewer is convinced that the intellectual demands
of the material in this excellent text require the sophistication that can be achieved only from two university
years each of calculus and physics. This means that the
student has covered the equivalent of Physics by Halliday
and Resnick.
The text is divided into four parts: (i) three chapters
deal with the sun, its apparent motion across the sky
and its insolation at the earth's surface, (il) two
chapters In the principles of heat transfer and optics,
(iii) two chapters on solar heaters as applied to space
heating and hot water systems and (iv) two chapters
on thermodynamics and the photogeneration of electricity.
Each chapter provides a careful integration of the
necessary theoretical principles and relations. The
major weakness of the text is that too many formulas
are provided with very little introduction and are not
derived. Students with two years of physics will still
require careful introduction to most of the principles
required to design solar energy conversion devices.
The chapters on solar heaters are excellent, but the
chapter on photovoltaics is far too skimpy to be effective as an introduction since the basic concepts of
solid state physics necessary to understand conduction,
semiconductors and, in particular, photovoltaic cells,
cannot be covered in one short chapter. It is unfortunate
that the author felt compelled to cover this topic in
an introductory text.
In summary, this text can be recommended for use in an
introductory text on solar energy with emphasis on the
principles of physics as applied to hot water heating.
H.A. Buckmaster
University of Calgary.
PHYSICS FOR THE HEALTH PROFESSIONS, 3rd Edition, by
J. Trygve Jenson. John Wiley & Sons, 1982; pp. xii +
329. Price: U.S. $14.95 (paper)
This well written book is intended for students and
practitioners in both nursing and allied health, as
well as others in the medical field. Thirteen of the
fifteen chapters cover classical physics topics at,
perhaps, the senior high school level, including measurement and error, levers and machines, gases and liquids,
heat, light, sound, electricity, and magnetism.
The text is very readable with good diagrams, worked
examples and additional test questions. Following
discussion of a physical principle, examples are given
of its application in the hospital setting. Such examples
include Russell traction, ergometers, pulmonary function
tests, I.V. set ups, blood pressure, metabolic rate,
hearing, sight, E.C.G. and many others.
The final two chapters deal with the subject that most
occupies the time of the hospital physicist: ionizing
radiation in diagnosis and therapy. The basic physics
is well treated at an elementary level, with concise and
succinct explanations of radioactivity, nuclear medicine,
radioimmunoassay, ultrasound and computed tomography
(both transmission and emission).
Unfortunately, many of the nuclear medicine procedures
chosen for discussion are no longer practised at most
hospitals, having been replaced by safer or superior
modalities such as ultrasound or C.T., or by newer
radiopharmaceuticals. These include the use of 1-131
for placenta location and brain scanning, P-32 for tumour
location, Sr-87m for diagnosis of bone and joint infection
in children, and Sr-85 for bone scanning.
The biological effects of radiation are discussed in a
framework of nuclear warfare which may reinforce the
stigma already present in many minds, and while the
"new" SI radiation units are described, the changes in
radiation protection philosophy introduced by ICRP 26
have been overlooked.
This book can thus be recommended to those involved in
teaching elementary physics in a medical environment
on the strength of the first thirteen chapters, rather
than the last two.
It may also be of interest to hospital physicists engrossed in radiation who want a reminder of the other
applications of physics all around them.
E.W. Spiers,
Division of Nuclear Medicine,
Toronto General Hospital.
COMPUTERS IN RADIOTHERAPY PLANNING, by Raymond G. Wood.
John Wiley and Sons, 1981; pp. ix + 171. Price: U.S.
$47.95
This book appeared previously as part of the Butterworth's
'Computers in Medicine' series in 1974 under the title
31
'Computers in Radiotherapy - Physical Aspects'. The
change in title and change in publisher has been accompanied with small changes in the content which are not
sufficient to bring the book fully up to date.
The book describes the theoretical basis of tissue-air
ratios, scatter function and depth doses and various
ways in which these have been mathematically modelled
for computer application. A lengthy discussion of single
beam isodose distributions precedes a discussion of
addition of multiple beams and, finally, optimization of
treatment plans using linear and quadratic programming
techniques. A central chapter on brachytherapy sources
is included in the middle chapter.
The book serves as a useful catalogue of approaches to
computerized treatment planning, but makes very little
attempt to assess the relative merits of different
approaches. In this respect, it serves as a useful
introduction and index to the published literature, but
does not give definitive advice to the clinical physicist.
Subjects of current interest, such as CT based treatment
planning and inhomogeneity corrections, are very superficially considered for a book with a publishing date
of 1981. The book will be a useful volume to a small
number of clinical physicists who are learning about
computerized radiotherapy planning.
R. Mark Henkelman
The Ontario Cancer Institute,
Toronto, Ontario.
TIME SEQUENCE ANALYSIS IN GEOPHYSICS, 3rd Ed., by
E.R. Kanasewich. University of Alberta Press, 1981;
pp. xiii + 480. Price: $30.00
It is pleasant to review a topical and authoritative
book by a Canadian author.
Professor Kanasewich is well known in Western Canada for
his connection with exploration geophysics and this new
edition of his standard text provides topical comment
on mathematical methods in seismology.
The subject of waveform acquisition, smoothing and analysis is important in areas other than seismology and
oceanographers and meteorologists, as well as engineers
concerned with vibration, will find the material interesting.
First, there is an introductory chapter which provides
some history and a number of examples which show the
utility of time-series analysis.
Convolution and the Fast Fourier Transform follow, the
latter chapter containing an account of two-dimensional
transformation and giving actual FORTRAN programs for the FFT.
Laplace transformation and correlation follow and a
chapter is devoted to the Wiener-Khintchine theorem,
the latter is perhaps over-long for the initiated but
will be valuable to novice users.
The important subject of Aliasing has a whole chapter
devoted to it, an indication of its importance as a source
of potential error and confusion.
After a discussion of power spectral estimates, there
follows two detailed chapters on maximum entropy (MESA)
and maximum likelihood (MLM) estimation. A number of
examples are presented as well as useful FORTRAN programs
and a comprehensive bibliography.
The remainder of the book is concerned with filtering
and presentation. Butterworth filters are examined in
detail and, as with the FFT, some FORTRAN programs are
given, but the discussion of other types of filter such
as those of Chebyshev and Lanczos is either lacking or
inadequate.
Mention has been made only of the major topics covered
in the book. There are, in addition, many interesting
sidelines such as the Cepstrum, Walsh functions, Data
compression and inverse transformation.
The whole account is up-to-date and concentrates upon
digital as distinct from analog acquisition and processing so that this new edition is likely to remain a
standard work for some time to come.
A.D. Booth
Autonetics Research Associates, Inc.
Sooke, B.C.
•d vi
cr W
ft) rt M rt F- H* CL > P H* en rt H- rt O Mi O
P O oMl
Ml C
C
X3 ft)rtCD rt O P
H rt cr o o Mi O
P
H- en en CO C
rt P
a. cr op rt P
*P P P
ft) 01
cr P H- P h-1 oM
1
rt
rr P
MP cr
M
p
^
C
D
F
CD OO eFC
D
H-tJ
P
e
n
p
P
P
»i
P
K
cr M »dH* P* P
OH- CD
- 3S
(D O P CD O H- en en B P
ft) -CDCD n CD C
CH
CD CL O
H
CO P HP
3 O M O rt CL Mi P<—•d
0c ^M rtO rt
>
-iet 8. cr
P
e
n
cr
n
o
Pft)
O
C
o
<
O
M
1
3 p rt fit nH
Ml P § s M Op O M rr
P £ M. O p* F rt
CD O
t
OH
o HO
C
D
Fn > M
O F- F- rt P*
8.
SH0
O
P
S"
n
CD
IOOQ rt Ml P O rt1 CD F*
CD rtft) rt
P O
O<
L S P op N
a)D <m
Ml H- (D
O o rt oH* O
rt Mi F
rt (0 A pO CC
P*
P*
H
O
O
C
D
C
D
O
D
:
P
en
H- P
C A ft) 4 C
»M
P J—1 „ H* P
B
» OQ O
WH
Cl cT 00
CL
rt P*
O
O
O
P
H
»
C
M
O
ft)
H
»
H
C
o
S
S
e
n
ftj rt F* H H
O X}
P C M rt MI o CO P C
P D
w
H
X aH'W
^ H* B t) C
U rt P
H-fl
m g rt
ET I-1 o •d 1 P Fcr pP H
C PMi P
o CD ft) D
P H
rt ft>
rt p.
F- •d O O
rt* pP pCLen 3P P O rt
C
D
H
O
O
n
C
D
p
Mi F» CD •a P M
o p rt M s
CD OF- P* CD rt en P
P
H
M»P rt
u ft)
CD F- en ri H
W —
( n rt K FP en
ft)n rt C
ort 0M C P O P
en oM M
M rt M
C o CD en-P
CD P
CDF-F* F CL
3D•a
rt cr P
CL £
M Ml p
en rt
C
mi
eo MOQ H
3
B
P ft) ft) C
Ow
* ?r «o
o
p
cr
c
o
O
O
Q
P
p
< > w
E
T
c
o
•a
1
—
'
H
»
H
»
Frt
p
H
H
»
F O rt
io
rt C
rt P
O H* O 0
C
ft)OQ M
P
O Men h-og rt oMi C
>1
P O
rt
rt
m
rt
O
P
rt
C
O
p*
H
M
C
D
F*
OC
C
D
H
»
P
P
B
p
+
r
PL CD H-H-P • 1—' P 13 P O rt S
rt n> 1 CD rt CO C
D > CD
CD
cN C
B HM
rt
C
L
C
O
fi
C
O
—
l
M
p
C
L
C
C
D
O
M
o
M
O
Q
O
»
o
P* oMi
crD O a
<
P P O P P M P rt Mi O CD co cr p H
< M
P M ft) O
C
M
C
D
ft)
P rt
pZ
M
O - O M H» CD FePn H
C "xi •a P lï O 00 CD
Q P O 1-ti
H
PO
P ^ rt ^1—1rt
M
rt
rtD
V
îC
cr pen •a <
Hi O C a rt
—* O Mi £ o coco o
O
F- CL M M
P 1
rt
ft)
ft)
ft)
ft)
H
-C
D
O
P
C
D
H
-M
H
-P
ft)
C
D
3 OQ P oc P* O CDCL P rt en p CD S M en s C P
r
<
T)
cc O
<
<
M
M
O
>•
< ex
i
B
£
ft)
C
O
rt
C
l
rt
M
i
Hm
H-H
C
O
C
D
C
D
C
D
O
Q
*o
o
M
H
M
Mg
CD
CL O Mx C
L B
OQ P COFaF- ft)rt
M P O
O - P rt M Ch-1 Ml M
P
P
OC
PO —
O
C
O
FC
C
D
e
n
i
•
z
•
C
D
o
o
•a
O
Q
3
e
n
O
rt
Frt
ï E
cP rt rt4 co m
P
H- (D 3O" O Ml F- rt
M CD H*co1 O O p*P
Ph-en CO 4 en en o rt
P H
h-1 Fen
M
P P
P ft) rt
H* h- C H-ft)
H*M c bF*
P o >=
O eCnD (P
K- CO C
PLP rt
"<3 O
^
oft) pOo rt
D OOQ
M
(DL C
H1o O 3 rt
P p F1 Mien a oo H
P
C
rt O < CD P
O
i
®
v;
en rt
P c en • M o p 3 a
P H- «C O H- CL M
n
0) o p H
f»
>M
f*CD rt
P M C
P C rt •tJ
rt
rt
P
M
M P ePn pp g. rt P
<
ft)
0 CD M>
H
rt oMlg ^ P OP Prr en > o
CL
L CO OHCD CCLM <ft) M
o C
cr
X) HH
*
1
C
L
rt
C
L
•i
C
D
F*
Ci
CD
F- C
H- P rt
P
Oi HO* P
M NhH3CD P cH-1 P
S- O P B M
L cr oP O
pL £
M
H
o en
O O MM
P rt
P< C
§ (jq F- CO H
L <
H
prt T> H- P C
rt
O* pc vC
D H» CDP
D Ocr*C
O
Q*
PL €hP1 cr O c
F»O PO (D Tj
o
P
rt
rt
rt
rt
rt
cr
M
M
P
P
H-H(D O M n- oq rt OQ 1 o
C 1—' H-1 en «-«d cr M M ePn T3 Oen CD P F Ln 3H-O
O
^
pi
C
D
pr
e
n
M
P
3
O
S.
M
l
H
rt
p
M
&
"d
F*
m
i
O
O
M rr p. xi rt F- CD < CL ft) CL OH- » P
P H
n» cr rt O F
CD P
P 1- CDP h-1 P
en H-ert
BO P
O n H- O O
O M
D O rt M CL M» OM C 1
P
(K O O
rt O
O rt C
« •d
O
C
O
M
H
3
H- O P H- CS
rt
rt
M
c—1crCDrt o CO
1 O S O eHn
O
1 nP
(1X
M»
z
O
CO ft) M <
rt
rt Cl
cCL P 0)
CD (D P
F- j£
rt CO ft)M
C
D
CO (D <
P
CO oc M
P- ft)CL
< CL.H*
B i
P Pi :
P
rt i
C
01 tl
AJ <Ti
•
?r P .»
P
OP O
M p. £U et •d Ml Ml Mi
M CD
rtP F- O
(0 O
OOOS
PQ cr
rt O
CD CLCP P C
P
•d
2L P
CD0P
M
Q
C
C
D
=
F»
C
D
D Crt
P
C
D ep rt M CD
O H-X P a. O rt P C
P
F*
4 a.
P*
CL p P F cr P
O CDrt p
rt
rt
P
P CDP rt K CDTcr
> C
CD
en F*
F» C
PL
L rtX
rt 00 J3
O
C (D1
P
FF
P
P O en H F1 O
M
M
P
•
<
M
cr
2
C F- P
o
P1 M
F* F Mi P
c
P
rt
P rt P P S
C
F1<CD •d F- 3 O
Lo
P H FO cr cr O
CD
L p.
Ml nX C
C
D
M
P
P*
O
P
P
(
D
p
P
Ort P
- P cr O
FCD cM
rt F*
F
rt P
ClF
cr g a M
P cr «c co P
P F*
o
F* o n> CD P o
FC
D
P
P*
P rt
C
F-rt rt P P <HrtD P P
cr F*
CD O
Op
K (D O cr rt H CL
P
p OQ : p rt a.
P •d
CD
C
n n c C P* CD K sr
rtD n>rtM
P pM PCDO rt oF-g
o p CD
S M
** cro rt
C
F
g
%
p
•d
P
rt p p"d X cr P* P a
< ! " 7T M
P • O
CD CO
o F4
F- CD F* s „ s FDS
OC
PL oMl rt
<° 3*
S.rt C
F- F*
rt VJ 1M
1
S
P M cr P F
P D1 P H
rr
P
F- (D C
PD en 1- It M C
F P* cr 1
F F*
CLPCDO
» rt P M F*
F* cr ce F
P
cr ^ rtP o PP
O
O
P
P
n
S
M Mi
M rt O S N V! Ml Cl O
Ml
P
o
c
o
cr
C
D
H
3
P
P
P
"P
O Mp p. m rt F ro oq
P Mi
M
P CDP* m CD rO
> ci- 0PQ CD P £ CD p
S O
») pCD oCD(D P cr P
M
P
p
<
F CD co M P
Ml CD Ml P o G
M pM
S P rt M
(D OCx.g S i§ K,
O
MP
C
D
F"d
S
O Ml M rt
p p- d P1 M
FO
B
X
g rt oo cr
CD rt W m
cr en rt rt F rt P rt
M
•d
F»
-* cr cort
P
p- H
rt O cr
4N F
»p-t oF-S
D rt1 P*
P FCD F
a
CD !
OC
C
O
C
D
rt A O OQ
§a CD
o i §rt rt
M
C
D
cr
O
< 1
S"
g
F* cr CD CDX P §
c P P s P
O
cr •
cr
S
F- CD
 P < X
1F- "P
Ma
a
rt O ^cr
(Dl. M
C
rt oo FP 3 ex
P
A p.rrX)
rt
M F-
rt H cr n o > CL ^
Op
S g- cr
CD (6 H-g" CD
•d
M rt
§ •a
rt P
O rt Mi S"
O §cr S
<
P
S p O F- H
<
O H(D P* rt
O Ort IpX F44 <
rt P
M rt 1C (Da P- F cr
cr
D CD
A CD P*•rt en F*
CO cCoD C
p. o
p.q
P
F CD rt
O O ?r
M
O t» pp rt F P
(
C
P
Ml P CD
CO O 0Q CD
P
g (D
1 pA P P Ft,*
cr F4 F rt
rt
M
rt CD O
H- O
cr m co O P
ex rtpO
P rt » 5T P rt ft)
P
O
M
D
F
-C
rt Mi P cr CL P*
CD 4CD £ O CL
PO «i O
F» 0> P*
O CD FPP
p O
D 2 P OCD
Op
co C
P- 00 •J-,
rt 00
3 rt FP F-OP (X •d
P PCD
Ml rt M
M
CD
CO < TPS P FQ
C
MO
P
rt K •d
i-t 3 3p P2
tt
M (P
P O F* H-rt
XF
Oi
P
CD O
Q•PCDP
cr O
CO rtP M
cr
m h—4Ml CO
P
rt
rt
P
P
o
§
rt •d - F- en O K H
ocr rtF rt P
4 cr o
co CD F
F*
P- CD
F- P - P O O CD
£
D 6
& fis
4 cr p p* C
P PCLP P
Ml oP
o ^F
F1 p.
lp
N
CX —C CLCD H M
A
rt
CD
r> cr O M
H
•pi sp § p rt vF
rt •5 P B p F» p. CD
P rt p
O ex op. rt C
D • CL
HH
C rt
•
c
MO
o5o*3 ft)C
nL o
o
M
p CO F- rt
p
P p P rt
rt
o •o F
H
»
ft)
c
o
n
O
cr
P o rt crt
< w
p
A
rt
i
OQ C/5
-feeW
co gft)en
Ln O
• P
O
o ni
M
O1 CD
co>
F COn
o rt
cr V
hO
-*
w
H
s
g
CL «OO H P CL F B p o rti 3 F- 00 O P4 A A F- O rr rt p. rt rt A O F H
F.
o oB sroO
F* A
P F
CD
o4 O O Mi F P F O cr O F- P A o P Ml P cr
4 M M sr F- A P P cr4
rt F
A rtP rt A O
M
ex A
p
M A OQ rt F ? O
A
O 0QO O
P
rt P F« A A
A Mi O
O<
3"
F ort A
A P*
P •d
F- A p rt P A rt « rr P A
K
o cr fi P
M
rt
P
A
FO
P F- A P M O 3F- cr A P r
B
P* M W
O CDg. »-< P F
ex
O
F
P
FP
C
D
d rt
PO
1 rt A A O cr O A O O p
O £ F- F*
P
• mP 2 P
M rt
ll P
XI *A
rt A rt O
AP
F A OK M
O
M
P M
4
rt
M
rt
rt P
0
Q
p
cr
M
i
M
i
(
D
O
cr
c
A
4 P (X rr O
3
F
P
<
1
S
3
M p
O
F"
F
O
P
1 rti P P :: A M A p
p
< P
4 A F Mi Mi O F FO X CD M
M Cn
Ol <î CL Fo
o
F ex
OQ rt
F-4 rt p A rr A rt M pA
O
P O
rt £ F
rt O
F4 P P
cr rt
M 3 0pQ K
•P P cr
F4 n F
F* F Ft A
C
*A
CL P F- F* A
ex rt pA Fex P
rt
A
rt
P
p
P
p
P
P
A X cr
rt
P
P A
A P rt F*
rt ex < oF- rt P
P rt
o Frc O
C F
p 00 rt H FCD F-P M
P
A
A
P
O
4 O P rt F
H
*
P
P
P
O O F-4 O
ex rti MN>0Q rt ex cr M en O 00
cr
p
O
1 F Ml M A O
>
Fg
F
» F*
F C O
P F rt rt P P F O A p A
FA S <
P AO
1
M
M
i
CD
P
C
L
FP
p
rt
o
?
O
A
O
A
P
F
C
A
A
A
5
P
P
M
P
3
ex O
(X CL P P* rt O P C O •d4 rr o F- A CL P rr 5 n <
p- rt
"d A
"d P A
CD P 1 rt A P ex
A rt ex
P F- P4 « F
00 p 1 P ex cr CL p P »û O
M CD
•d ex
ex o4 A •d
A rt P
AF
P* rtprt rt
cr 1 F*
A
P •d
ACDrt
P
2 rtP O
P
A
o
H
O
O
P
O
A
O
F*
fi
G
A
F*
F
rt
op
p
F
z
i
O
P rt
rt 4 « rt •û rt O4 p Mi A p P O g F- rt p A P A P M
en A
P F4 rt
rt
cr
A
F"
ex
F
S
P
C
F
N
rt
FP
Fcr
4
O
§
o
O
A
O
C
L
p. ex A Mi CO O a. p F* S* XJ F4 rt n o" F- P p 00 cr F» F* t. F-1ex M K>A
CD F > O
Cl
- CL T3 O A K M p P Ml rt o pex 
A
=r P CL •d
cr f> p M\ O4 o P P rt P FF
»
C
D
ex
M
•p
00
F
§
P
A
P
P
P
P CDs O rtl
ex
O Ao
F 3A o ex rt O
A
P OO
FA rtŒ P P O
rt
p ex
rt
rt
F- vi
p MF
cr
M
r>
p
P
T
3
P
p
A
A
P
^
P
P
rt F* 3 P A F- £
rt p
ex S C p1 F- cr ^ O rt rt ex £
A
A P P a? rt
F A p A rr M>F- P t, P
p Xi O P O p rr P
8$ w p P
rt
ex « As rtA •d
O rt
rt M
p F
P P
P4 A p
A
rt
PA C
ex
P
rt £ C
ol 4 p
F
F
cr -p >d rr cr A C
D ex
PA
p rt A
i rt § rt M
M oMF
rt K P rt
rf
M
O
A
A
A
O
A M M P* p P K
H- cr rr
rt5 •d4 rt P M P c
F- P p* P P
P
O
P
O
P
O
g
P*
P
A
P
K
O AP O rr P P F ex P H O P rt P* P ex
3 OQ ex
g rr A
p cr
• P M rt ex cr A
cr p O
rt TrtQ
O
OA C
P P K rt p A rtA rt
< pO
A
O «X o oM •d rtA
o
F- A
F* rr A
rtA c OQ rt
A rt P
H
4
t: O g PL F*
C
L
rt
rt
cr
F*
o
O
M
00
o
F
g
o
o
^
t,
P
£
p
rt» 3 A Mi rt
ex
M
N
M
l
M
ex
cr
M
Q
)
P
O
00
F
»
M
A
o
o
O
t
^
Mi ex rt cr
rr
A F*
P f-n
ex p rt A
Mi A
i F4
P^
P cr oo B* rt o Ml A rt t) A crto ex
F- P P
rt1 P
F- P p* P
rt M
Mi A
P
A rt O
O
O p " F*00 P* p- O
F- cr M ^ CL FCi
4 rt cr O P T.
A
P
et
F
M
M
o
rt
p
FP
P
P
Fp
O
O
F-O
F*
A
P
A
A
p A
O OQ cr P A O F- P ex rt P P rt F rt
Ml P O P P P A
AM
A cr •d
O
ex M K rt P P 0Q cr cr
rt
A
A
n
A
O
O
4
P
P
o
A
c
p
3
ex A o O P c P4 A rt grt A P rt F cr rt O* A rt
£ § H-A £ P A •-S P
ex O P € F rt cr M O cr "d c
ort ex <A
rt A rt M »d1 ex O rt
S-g P
cr cr P
P P prt
ex
P" C
rt
P <P F4 O
K AO
Mi"O rt
O
rt
pP
cr
O
A
F
P
p
c ex <
p rtP P
4
p
P P P A ort O
rt P O
ex P P* O rr
P
a
O § F FM
P
M
A
3
rt CD P H P P FH
-P
a
P
i
M F*
O ex
F*
H
»
FP
€
o g
ex
A A P
CL p. ju
P O P
A p
S
t-tl p.
M i F»
1 AC
1
P
P1
A Ml
O
o
F4 oMl O K
F* O O
A
rt P
Ml F* O32
Ml oMlP
P <P
PL M H
cr
M A •d
C
M rt O
A 3rt rt
p
A
A
A
BM
rt n O
00
OQ cr X)
A
F
Fprt rt *d
F* < F* A o ti O P P
rt P* M rr
rt
A
O
A
p
P
O
P
T3 O Frt cr O
cr A F
rr A M O ex o A
O rr 3 O H
cL Mi P
CL P
rt CD o P C
M A P rr *** P
(D P P cr
m cr O
O
P
FA
<
A
P
CL -p A P A F CL F* M P00Ml A
• C
pD rt cr
P
rt
X)
A
1 MP A 3
F
ex A M vO A O
F AF F
F- O M
4M
F
A
F*
F
P P
P rt
K
FO
O
O
A
F
O
H
P
rt rr Ml O > C O
F rr
O
AOP
H
Ml P
rt
A
cr A P* cr
A
A
FP
P
O
A
ex A P • •d
ex
A
P
*
F*
rt
ex ex rt xi O p c C CL F4
cr rt F* P00 t,cr
O
A
4 P A c M3 F
F- F* F rt
M A pA A
p cr P rt rt O
rr CH
TA
P cr oA A
A rt
cr A rt M
CL 3p rr
F- P
F O 00
(
D
P
g.
o
M,<< O A
O FO
A O "FA C4 M O
T3 C
A A p O O xP cA
CD
L
M ol Pî cr
F AO
nM P
S" P
P
^
Ml H
A pp
A xiA F
»
P
A
O
P
F*
P
M CL €p» rt P cr K O A A F- F-P*
•d
rt A Ml rr F- A A
OO O
F- A P cr A F*
3
g" F* 3 cr a rr
O rr O <
P A A "d C
cr "d
A F- O cr
rr M O
P1 O O
P
< P MlA
l O4 g o A
AP F AM
M F O (X o
O
A
P
o
F
p*
rt P p P o P
3
P Ao
O
F
P
Mi g F- O A Ml p rr A ex F* 00 3O oA PO rt
p
O cr F» A F- A O A P en g F.
rt rr P A Cl P4 C
D
O
O
<
cr o
O
A rtA F
P
1 A P P A1
F- A F4
F ex rt F S O •o
A O rt
O F£ n rt H
n rr H
P* P
Ml rr "p
rr O
cr1 rt o O
A
• •»rt O
O O p.
P
D rt F P
P (FM p rr A A
A
A <A rr
rr rr
M rt A A P M cr A O
F* A PA
p
MO
A4 A O
P P
O4 M A O
A rr PCXP
O
cr M A
< F
O F cr
3 P
<
p*
oP C
CA
p-t € M
S" rt pN A S
rt A
rr
A
A rt S.
P
P
rr
M
l
P*
F3
A
f
cr
•d
O
rr rtA Ml P P <
rt A M
Ml P O
M
A ex
P A P P* rt O
rr l
rt g A rr F* ex F» Frt! rt r)
cr
P
cr
Vî ex
pA P*
A
A
A O
u*
N)
13
3n"
5'
n
3ù)
C
l
CO
What is automatic light
measurement?
It is as simple as using a
computer and a separate microprocessor to control and process
light measurements.
The EG&G Gamma Scientific GS-4100 Intelligent Radiometer with its own microprocessor,
sets the stage for the new era of
automatic light measurement.
We use the microprocessor
in the GS-4100 to perform the
highly repetitive functions and
SPECTRORADIOMETRY
SPECTRAL
REFLECTOMETRY
SPATIAL
SCANNING
MICRO DENSITOMETRY
the host computer software to
control the measurement sequence. This concept gives us
machine language speed where
we need it but maintains flexibility and convenience for changing test procedures.
Processing? It is done in
each, wherever it is most efficient.
EG&G Gamma Scientific—
leading the way into the new era
of automatic light measurement.
Write or call today.
C1ENT1F1C
3777 Ruffin Road, San Diego, Ca 92123 (619) 279-8034
Cable/GANS SDG«Telex/697938
• v
is: Technical Marketing Associates Limited
Head Office: 6620 Kitimat Road, Unit 6, Mississauga, Ontario L5N 2B8
Telephone: (416) 826-7752
DALHOUSIE
UNIVERSITY
HALIFAX, N O V A
SCOTIA
Research Associate
in Fuel Physics
THE
UNIVERSITY
OF CALGARY
POSTDOCTORAL POSITION
Applications are invited for a postdoctoral fellowship
or research associateship at Dalhousie University
for someone with a strong background in condensed
matter theory. Preferred starting date is September 1,
1983. Salary will depend on experience. Address
enquiries and applications to:
Professor D.D. Betts,
Dalhousie University,
Halifax, Canada B3H 4 H 6
TRIUMF
MESON RESEARCH F A C I L I T Y
University of Alberta
Competition #377-112
RESEARCH ASSOCIATE IN
INTERMEDIATE ENERGY PHYSICS
A p p l i c a t i o n s are invited f r o m p e r s o n s w i t h experience in
i n t e r m e d i a t e e n e r g y nuclear physics. A good w o r k i n g
k n o w l e d g e of c o u n t e r systems, fast a n d s l o w electronics
a n d c o m p u t e r s is required. Experience w i t h nuclear
cryogenics w i l l be most helpful.
The s u c c e s s f u l candidate w i l l be e n g a g e d in t h e University
of M a n i t o b a ' s research p r o g r a m in i n t e r m e d i a t e energy
p h y s i c s u s i n g t h e T R I U M F a c c e l e r a t o r , l o c a t e d in
V a n c o u v e r , B.C.
Applications are invited for a position as Research
Associate in Fuel Physics in the EPR Group. The
candidate is expected to have a strong background
in electron paramagnetic resonance, infrared
spectroscopy, x-ray crystallography and the physics
and chemistry of heavy oils, oil sands and coal.
Applicants should have at least five years' postdoctoral experience. Salary approximately $24,000
per annum depending upon experience. Initial
appointment is for one year. Preference will be given
to Canadian citizens and permanent residents in
accordance with Canadian immigration requirements. Closing date for applications is January 31,
1983. Send curriculum vitae and the name of three
referees to:
Dr. H.A. B u c k m a s t e r
T h e University of Calgary
2 5 0 0 University Drive
Calgary, Alberta, C a n a d a T 2 N 1N4
McMASTER UNIVERSITY
POST DOCTORAL FELLOWSHIPS
TEACHING FELLOWSHIPS
RESEARCH ASSOCIATESHIPS
AND
GRADUATE ASSISTANTSHIPS
Applications are invited for post doctoral fellowships,
teaching fellowships, research associateships and
graduate assistantships in the Physics Department.
Areas of research include theoretical physics, solid
state physics, nuclear physics, quantum optics, mass
spectrometry, chemical physics and astrophysics.
Experimental research at McMaster features a
tandem accelerator, a swimming-pool reactor and
the Institute for Materials Research
The a p p o i n t m e n t s c a n n o r m a l l y be r e n e w e d a n n u a l l y ,
subject to the usual budgetary c o n f i r m a t i o n . The
s u c c e s s f u l c a n d i d a t e s w i l l be e l i g i b l e f o r a t r a v e l
a l l o w a n c e . R e m u n e r a t i o n w i l l d e p e n d on q u a l i f i c a t i o n s a n d
p r e v i o u s experience.
Applications for post doctoral fellowships, teaching
fellowships and research associateships should
include curriculum vitae and the names of three
referees.
A p p l i c a t i o n s i n c l u d i n g c u r r i c u l u m vitae, bibliography a n d
the n a m e s of t h r e e referees s h o u l d be sent by January 3 1 ,
1 9 8 3 to: Dr. W T . H . van Oers, c / o TRIUMF Personnel,
4 0 0 4 W e s b r o o k M a l l , V a n c o u v e r , B.C., C A N A D A , V 6 T 2 A 3 .
Applicants for graduate assistantships should write
for further information.
W e offer equal e m p l o y m e n t o p p o r t u n i t i e s to q u a l i f i e d
m a l e a n d f e m a l e applicants. In accordance w i t h
Canadian immigration requirements, this
a d v e r t i s e m e n t is d i r e c t e d to Canadian citizens
a n d p e r m a n e n t residents.
Write:
Dr. C.V. Stager
Chairman, Department of Physics
McMaster University
Hamilton, Ontario, L8S 4 M 1
TMA Physics
Optical Radiation Measurements
VUV, UV-Visible (0.3 to 2.2-Meter Focal
Length) Monochromators and Spectrographs
Optical and mechanical modules for custom
measuring and positioning assemblies
Gamma Scientific's Systems Have
Generated More Solutions for Accurate
and Repeated Results.
Look at Gamma Scientific's all new optical
radiation measuring products; digital radiometers, high purity monochromators, new
generation photomultiplierand silicon detectors, ultra stable calibrated sources.
Add the high performance of Computer/Controller and you've got a system that produces
analyzed data within seconds of acquisition,
all under control of Gamma Scientific's
copyrighted SPECTRL™ and SPATL™ Software.
Model 247
Monochromator/Spectrograph
Grazing Incidence
2.2-Meter
1-250nm
A wide line of basic optical instruments, plus
scores of Gaertner interchangeable components and accessories enable you to build
your own precision optical system. There's
an ideal combination to solve almost any lab
measuring, positioning, or observing problem quickly and easily. Our Optical System
Selection Chart tells you part of the story.
Additional details on all the Gaertner optical
instruments shown (plus many others) are
contained in our Bulletin 161. Write for a
copy of each, plus a General Index of literature covering all Gaertner Instruments. Just
ask for an Optical Measuring Information Kit.
C - 3 M Computer Controlled Scanning
M k r o p h o t o m e t e r System
RS-Series Calibrated Standard Radiance and
Irradlance Sources and Monitor
C - 3 S Computer Controlled Scanning
Spectroradiometer System
Model 235
Seya-Namioka
0.5-Meter
30-1200nm
Model 225
McPherson Normal Incidence
1 0-Meter
30-600nm
U.S. PATENT #3,090,863
Model 216.5
Monochromator/Spectrograph/Polychromator
McPherson Corrected Loci
U.S. PATENT #3,490,848
0.5-Meter
10cm focal plane
105-16,000nm
SNAP-IN GRATING
*
U.S. PATENT #3,433,557
i
Model 218
McPherson Criss-Cross Optical System
U.S. PATENT #3,409,374
0.3-Meter
105-16,000nm
—
SNAP-IN GRATING
A
U.S. PATENT #3,433,557
Model 2051
Czerny-Turner with Corrected Optics
1.0-Meter
185-26, OOOnm
SNAP-IN GRATING
U.S. PATENT #3,433,557
—
h
Model EU-700
Czerny-Turner with
Corrected Optics
0.5-Meter
185-4,OOOnm
ft
GAMMA
SCIENTIFIC
® INCORPORATED
TMA Physics is a division of
Technical Marketing
Associates Limited
Model 285
Czerny-Turner Double Monochromator
with Corrected Optics
0.5-Meter
185-30,OOOnm
SNAP-IN GRATING
U.S. PATENT #3,433,557
GCA/MCPHERSON INSTRUMENT • • •
Head Office
6620 Kitimat Road
Unit 6
Mississauga, Ontario
L5N 2B8
Telephone 416 826 7752
Telex # 06-218 227
rthi
^ ^ ^ ^ ^ ^ ^ ^
f
H H
1
^ ^ ^ ^ ^ ^ ^
GAERTNER'
Manufacturers
ot
metric
instrumentation
since
Ï896
Halifax
Ottawa
Vancouver 604 270 8662
Telephone
TRIUMF
CROUPE C.R.M. EN SCIENCES
DES RADIATIONS DE L'UNIVERSITÉ
DE SHERBROOKE
Le Groupe en Sciences des Radiations du Conseil de Recherches Médicales du Canada, créé
récemment é l'Université de Sherbrooke, est en mesure d'offrir à compter du
1er janvier 1983, des postes d'étudiants gradués ( 2 et 3éme cycle en
Radiobiologie, spécialité: Physique des radiations, expérimentale
et théorique ) et de chercheurs post-doctoraux dans les domaines de recherche suivants:
1 -Spectroscopie électronique à basse énergie
2-Microanalyse des surfaces
3-Transport électronique dans les milieux
organiques è l'état condensé
4-Simulation Monte Carlo de la pénétration
d'électrons énergétiques dans des milieux
biologiques modèles hétérogènes.
Les personnes intéressées sont invitées à envoyer
leur demande de candidature, avec une copie de leur
curriculum vitae, à
Prof. J.-P. Jay-Gerin,
Groupe C.R.M. en Sciences des Radiations,
A
T / j O Département de
O J> "s") Médecine Nucléaire et de
Ô ^ y J Radiobiologie,
Faculté de Médecine,
Université de Sherbrooke,
Sherbrooke, Québec,
Canada, J1H 5N4.
—
UNIVERSITE DE SHERBROOKE
MESON R E S E A R C H F A C I L I T Y
University of Albeita
Competition #378-112
RESEARCH ASSOCIATE
Applications are invited for a Research Associate to join a TRIUMF
group involved in condensed matter studies using the techniques of
muon spin rotation/relaxation (juSR). Candidates must have a Ph.D.
or equivalent degree and practical experience with fast electronics,
data acquisition computers, cryogenics and muon physics. A strong
background in solid state physics and familiarity with the RSX-11M
and VAX computer operating systems are other desirable
qualifications.
The successful candidate will be expected to participate in
continuing /vSR investigations of a variety of topics including
surfaces, magnetic superconductors, spin glasses, and muonium
states in non-metals. The incumbent will also be encouraged to
propose and carry out original /t/SR experiments. TRIUMF is now
building new facilities relevant to//SR research, and opportunities
for developing new experimental techniques are unusually good.
This permanent position is available immediately and will be
initially for one year renewable upon mutual satisfaction. Salary
will be commensurate with experience.
Applications with curriculum vitae should be sent before February
28, 1 9 8 3 to: TRIUMF Personnel (Competition #378), 4004
Wesbrook Mall, Vancouver, B.C., CANADA, V6T 2A3.
We offer equal employment opportunities to qualified male
and female applicants. In accordance with Cenadian
immigration requirements, this advertisement is directed
to Canadian citizens and permanent residents.
Université de Sherbrooke
Postdoctorat
Postdoctoral Fellow
Le g r o u p e de t h é o r i e de la m a t i è r e c o n d e n s é e a u n poste de
c h e r c h e u r postdoctoral disponible i m m é d i a t e m e n t . Le groupe
est actif s u r t o u t d a n s les d o m a i n e s suivants: cristaux moléculaires, spectroscopie é l e c t r o n i q u e à basse énergie, biom e m b r a n e s , solitons, spectres R a m a n et i n f r a r o u g e s de struct u r e s u n i - et b i - d i m e n s i o n n e l l e s et m é c a n i q u e s t a t i s t i q u e des
s y s t è m e s hors d ' é q u i l i b r e . Les c o l l a b o r a t i o n s avec les g r o u p e s
e x p é r i m e n t a u x sont f r é q u e n t e s . Le c o n t r a t initial sera pour u n
a n et p o u r r a être renouvelé. Envoyez v o t r e c u r r i c u l u m vitae
et le n o m de t r o i s r é p o n d a n t s à
The c o n d e n s e d matter t h e o r y g r o u p has a n i m m e d i a t e o p e n i n g
for a postdoctoral assistant. The g r o u p is active principally i n
the fields of molecular crystals, low energy electron spectroscopy,
b i o m e m b r a n e s , solitons, infrared and ramari spectra of o n e
and t w o - d i m e n s i o n a l s t r u c t u r e s a n d n o n e q u i l i b r i u m statistical
mechanics. Interactions w i t h active e x p e r i m e n t a l groups are
frequent. The a p p o i n t m e n t w i l l be for one year a n d may be
extended. Please send r e s u m e a n d t h e n a m e s of t h r e e
referees to:
Alain Caillé, Directeur
D é p a r t e m e n t de Physique
Sherbrooke, Québec
Canada J 1 K 2 R 1
Prof. Alain Caillé
Directeur
D é p a r t e m e n t de Physique
Sherbrooke. Québec
Canada J 1 K 2 R 1
TRIUMF THEORY GROUP
UNIVERSITY OF WATERLOO
POSTDOCTORAL POSITIONS
It is anticipated that there w i l l be one or t w o positions as
Postdoctoral Research Associate available in the Theory
Group at TRIUMF to start in September 1983. Candidates
should have completed a Ph D degree in some area of
relevance to the TRIUMF program and should show evidence
or promise of ability to carry out high quality research.
Candidates w i t h interests in areas such as elementary
particles, nuclear and intermediate energy, kaon and hypernuclear physics, and /jSR are especially invited to apply
Duties consist of research, either independently or in
collaboration w i t h members of the Theory Group, w h i c h
currently consists of five staff members, six to eight research
associates, several long term visitors and a number of
faculty of the TRIUMF associated universities.
Appointments are for t w o years and renewed annually.
M i n i m u m salary w i l l be 522,000, usual university benefits
apply, and travel to conferences is possible. Interested
candidates should send a resume including a list of publications and have three letters of reference sent, as soon
as possible to
Co-operative
Programs
in
Science
•
Co-operative education students in the faculty
of science are available for work term employment — January-April, 1983. Candidates
include junior, intermediate and senior
students in the following disciplines:
Biology/Chemistry/Geology/Physics
Please call:
Dr. H.W. Fearing
TRIUMF
4 0 0 4 Wesbrook Mall
Vancouver, B.C.
Canada V 6 T 2 A 3
Mr. R.A.
Pullin
D e p a r t m e n t of
&
Co-ordination
Placement
U n i v e r s i t y of W a t e r l o o
WATERLOO,
Ontario
Tel: ( 5 1 9 ) 8 8 5 - 1 2 1 1
N2L
Ext.
3G1
3082
In accordance w i t h Canadian immigration requirements
this advertisement is directed to Canadian citizens and
permanent residents.
COLLEGE M I L I T A I R E R O Y A L DE S A I N T - J E A N
Saint-Jean-sur-Richelieu, Quebec, Canada
JOJ 1R0
SERVICE CONTRACT OFFERS
INDUSTRIAL POSTDOCTORATE
FELLOWSHIPS
Two contracts are presently ottered to carry out research in the Department
of
Physics of Collège militaire royal de Saint. Jean These are normally one year
contracts subject to renewal on the first of April of each year (except for the
initial period where the duration may be less than one year j. Contract
honoraria
will be established according to the researcher's qualifications
and experience.
Conditions regarding each contract offer are as follows:
M P B T e c h n o l o g i e s Inc. is s e e k i n g c a n d i d a t e s t o
n o m i n a t e for N a t u r a l S c i e n c e s a n d E n g i n e e r i n g
R e s e a r c h C o u n c i l of C a n a d a I n d u s t r i a l P o s t d o c t o r a t e
Fellowships.
S e n i o r r e s e a r c h e r : The successful applicant w i l l be
required to direct and do research in the field of photoconductivity of inorganic and organometallic materials for
le Groupe de recherche sur les semiconducteurs et les
diélectriques (GRSD). Candidates must have a doctorate
degree in this speciality w i t h at least five years of postdoctoral experience in the same field. Experience in related
fields like laser induced photoconductivity, ohmic and
microwave conductivity measurements w i l l be considered
an advantage Interested individuals are encouraged to
respond promptly, and to send their c u r r i c u l u m vitae and
the names and addresses of three referees to.
Joseph Zauhar, D.Sc., Director
Groupe de recherche sur les semiconducteurs et les diélectriques
Collège militaire royal de Saint-Jean
Saint-Jean-sur-Richelieu, Quebec. Canada
JOJ 1RO
T h e F e l l o w s h i p s w i l l n o r m a l l y be t e n a b l e i n t h e
L a b o r a t o r i e s of M P B T e c h n o l o g i e s Inc. l o c a t e d a t
Ste. A n n e d e B e l l e v u e , P Q.
R e s e a r c h a s s i s t a n t : The selected candidate will pursue
a research programme directed towards the construction of
a n e w type of a photovoltaic converter. He must be an
experimentalist w i t h a recently acquired doctorate or
master's degree in solid state physics or other related field.
Interested persons are to submit their curriculum vitae and
the names and addresses of three referees to:
André Filion, Ph.D.
Collège militaire royal de Saint-Jean
Saint-Jean-sur-Richelieu, Quebec, Canada
JOJ 1 RO
P r o j e c t s in w h i c h
involved include:
•
•
•
•
•
successful
candidates
may
be
Electromagnetic Science and Technology
Lasers a n d Laser A p p l i c a t i o n s
Fusion Energy (Magnetic and Inertial Confinement)
Plasma and Space Science
Electronic Graphics and Microprocessor Applications
S a l a r i e s a n d o t h e r b e n e f i t s a r e t h e s a m e as f o r
p e r m a n e n t s t a f f of e q u i v a l e n t e x p e r i e n c e .
Interested recent graduates, individuals currently
c o m p l e t i n g postdoctoral fellowships, or candidates
w h o w i l l g r a d u a t e in t h e near f u t u r e w i t h a backg r o u n d i n p h y s i c s , e l e c t r i c a l e n g i n e e r i n g or c o m p u t e r
s c i e n c e a r e i n v i t e d t o w r i t e or call:
D r . M P. B a c h y n s k i
M P B T e c h n o l o g i e s Inc.
S t e . A n n e de Bellevue, Q u e .
H 9 X 3 L 5 , P.O. Box 1 6 0
Telephone: ( 5 1 4 ) 4 5 7 - 2 0 3 5 .
THE UNIVERSITY OF BRITISH
COLUMBIA
FACULTY POSITION
The Department of Physics invites applications for a tenure
track appointment (subject to budgetary approval) at the
rank of assistant professor, commencing at the earliest, on
July 1, 1983. The Department wishes particularly to
augment the existing research efforts in plasma physics or
gravitational theory, but excellent candidates in other fields
of departmental interest are also encouraged to apply. The
successful candidate w i l l be expected to contribute to the
graduate and undergraduate teaching role of the Department.
Applications, together w i t h c u r r i c u l u m vitae and the names
of three referees, should be submitted as soon as possible to:
Professor B.G. Turrell,
Chairman, Search Committee,
University of British Columbia,
6 2 2 4 Agriculture Road,
Vancouver, B.C. V 6 T 2 A 6
A l l applications received prior to March 31, 1983 w i l l be
considered.
In accordance w i t h Canadian immigration requirements,
this advertisement is directed at Canadian citizens and
permanent residents.
DEPARTMENT OF PHYSICS
Victoria, B.C.,
Canada
The Department of Physics invites students to apply for
entry into M.Sc. and Ph.D. programmes in Physics. Research
areas include:
Astronomy and Astrophysics (observational and theoretical
studies w h i c h may be carried out in conjunction w i t h the
Dominion Astrophysical Observatory at Victoria)
Condensed Matter Physics (NMR studies of molecular
properties in solids and liquids)
Geophysics (electromagnetic induction, geomagnetism,
space physics, and upper atmosphere physics)
Nuclear Studies (intermediate energy physics w i t h the
TRIUMF accelerator)
Physics of Fluids (Plasma studies, shock wave studies, and
acoustic remote sensing in the ocean in conjunction w i t h
the Institute of Ocean Sciences)
Theoretical Physics (general relativity, nuclear and particle
physics)
Fellowships w o r t h up to
exceptional students.
$ 9 0 0 0 may be available for
The department participates in the Co-operative Education
Programme in the Faculty of Graduate Studies. Physics
graduate students may undertake studies involving work in
industry and government as part of the degree.
For further information, w r i t e to:
Chairman, Graduate Committee
Victoria, B.C.
Canada V 8 W 2 Y 2
ENERGY RESEARCH INSTITUTE
SIMON FRASER UNIVERSITY
Research Associate Positions
in Energy Conversion
Applications are invited f r o m persons w i t h semic o n d u c t o r p h y s i c s or p h y s i c a l c h e m i s t r y b a c k g r o u n d .
T h e ERI is e n g a g e d in r e s e a r c h o n s e m i c o n d u c t o r s
a s s o l a r c e l l s , as e l e c t r o d e s , as c a t a l y s t s a n d as
s e l e c t i v e a b s o r b e r s . A Ph.D. d e g r e e a n d p r e f e r a b l y
s o m e p o s t - d o c t o r a l e x p e r i e n c e is r e q u i r e d . S e n d
r e s u m e w i t h n a m e s of t h r e e r e f e r e e s to:
Professor S . R o y M o r r i s o n
Energy Research Institute
Physics D e p a r t m e n t
S i m o n Fraser U n i v e r s i t y
Burnaby (Vancouver), B.C. V 5 A 1 S 6
Canada
OUR PULSED LASERS GO THROUGH FIRE FOR YOU.
And make impossible measurements possible.
High peak power tunable laser systems from Quanta-Ray
provide access to samples previously considered untouchable. Using our lasers, various optical techniques allow
remote sensing of environments too hostile—or just too far
away—for conventional techniques. For example, coherent
Raman scattering is used to probe the intricate details
of the chemistry in a jet engine combustor. Or differential
§ Quanta-Ray
a subsidiary of Spectra-Physics
1 2 5 0 Charleston Road
Mountain View. CA 9 4 0 4 3
(415)969 3850
European Headquarters
Siemensstrasse 2 0
D - 6 1 0 0 Darmstadt Kranichstein
West Germany
(06151) 7 0 8 - 0
Marubun Corporation
8 - 1 Nihombashi Odemma-Cho
Chuo-Ku,Tokyo, 1 0 3 Japan
(03) 662 8151
absorption lidar detects trace chemical concentrations
at distances of kilometers. These techniques, as well as
many others, are feasible because of the high peak power,
high pulse energy, and the high degree of beam coherence of Quanta-Ray pulsed laser systems. From the inside
of a jet engine to the core of a candle flame, our lasers
can solve your difficult measurement problems.
•y
$
::: Technical Marketing
Associates Limited
Head Office
6620 K i t i m a t Road. Ur
T e l e p h o n e (416) 826-
ississauqa. O n t a r i o
L5N 2B8
Press one
button...
Just plunk down your favorite objects and see, at
a glance, microscopic disturbances. See how your
objects deform or distort during small environmental
changes or how they respond if you apply slight
stresses—mechanical, electrical, thermal, vibration,
or whatever.
Our instrument works like a fully automatic
photographic camera, but you'll be amazed by what
you can see through it. It provides ultra-precise
engineering data needed to design parts that can
function properly and without failure even under
severe conditions.
The basic technique is holography. Everything
else is new.
Send us your business card for application notes.
Better yet, have a quick try at it here in Southern
California.
design data
instantly
ALL YOUR LASER NEEDS
(we) Newport Corporation
18235 Ml. BaJdy Circle. Fountain Valley, CA 92708; Phone (714) 963-9811 ; Telex 685535
H

Canada La Physique au Canada

Transcription

Documents pareils

Archives ouvertes

PHYSICS IN CANADA LA PHYSIQUE AU CANADA

Andrii Gudyma – Curriculum Vitae

Conference Poster - Winthrop-King Institute for Contemporary

Bulletin d`abonnement

1 Books without Boundaries/Livres sans limites Tenth Annual

Energie 2ème année [PDF - 292 Ko ]

1979–1981. Un tournant dans les relations internationales

Libertaire

Options S4 Systèmes Complexes - Laboratoire Matière et Systèmes