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This series, established in 1965, addresses recent developments in the general area of atomic, molecular, and optical physics. The field is in a state of rapid growth, as new experimental and theoretical techniques are brought to bear on many old and new problems. Such problems range from studies of the fundamental properties of radiation and matter, through studies of hitherto inaccesible states of "ordinary" and exotic atoms and molecules, the control of atoms and molecules by light, the behaviour of atoms and molecules in intense radiation fields, the detailed structure of such systems, including complex molecules and molecular clusters, and a wide range of interaction phenomena among atoms, molecules, and their constituent parts and fields. Topics covered also include related applied areas, such as atmospheric science, astrophysics, surface physics, and laser physics.
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Advances in
ATOMIC, MOLECULAR, AND OPTICAL PHYSICS
VOLUME 30
EDITORIAL, BOARD
P. R. BERMAN New York University New York, New York K. DOLDER The University of Newcastle-upon-Tyne Newcastle-upon-Tyne England
M. GAVRILA F. O.M. Instituut voor Atoom- en Molecuulfysica Amsterdam The Netherlands M. INOKUTI Argonne National Laboratory Argonne, Illinois S. J. SMITH Joint Institutefor Laboratory Astrophysics Boulder. Colorado
ADVANCES IN
ATOMIC, MOLECULAR, AND OPTICAL PHYSICS Edited by
Sir David Bates DEPARTMENT OF APPLIED MATHEMATICS AND THEORETICAL PHYSICS THE QUEEN’S UNIVERSITY OF BELFAST BELFAST, NORTHERN IRELAND
Benjamin Bederson DEPARTMENT OF PHYSICS NEW YORK UNIVERSITY NEW YORK, NEW YORK
VOLUME 30
ACADEMIC PRESS, INC. Harcourt Brace Jovanovich, Publishers Boston San Diego New York London Sydney Tokyo Toronto
This book is printed on acid-free paper.
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Copyright 0 1993 by Academic Press, Inc. All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher.
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United Kingdom Edition published by ACADEMIC PRESS LIMITED 24-28 Oval Road, London NWI 7DX
LIBRARY OF CONGRESS CATALOG CARD NUMBER: 65- I8423 ISBN 0-12-003830-7 ISSN 1049-25OX
PRINTED IN THE UNITED STATES OF AMERICA 9 2 9 3 9 4 9 5 9 6 9 7 BC 9 8 7 6 5 4 3 2 1
Contents
vii
CONTRIBUTORS
Differential Cnws Sections for Excitation of Helium Atoms and Heliumlike Ions by Electron Impact Shinobu Nakazaki I. 11. 111.
IV.
V.
1 3 14 33
Introduction Theory Excitation of Helium Atoms Excitation of Heliumlike Ions Concluding Remarks Acknowledgments References
40 41 41
Cross-SectionMeasurements for Electron Impact on Excited Atomic Species S. Trajmar and J . C. Nickel
I. 11. 111.
IV.
V.
45 47 48
Introduction General Remarks Production of Excited Species Detection of Excited Species Cross-Section Measurements Acknowledgments References
60 66 98 99
The Dissociative Ionization of Simple Molecuks by Fast Ions Colin J . Latimer 1. 11.
Ill. IV.
V. VI.
Introduction The Dissociative Ionization Process Energy Distributions of Fragment Ions Energy Distributions of Fragment Ion Pairs: Coulomb Explosions Angular Distributions of Fragment Ions: Orientated Molecules Partial Dissociative Ionization Cross Sections References V
105 107 112 121 129 132 136
CONTENTS
Vl
Theory of Collisions Between Laser Cooled Atoms P. S. Julienne. A . M . Smith and K . Burnett
I. 11. 111.
Introdu