Coherence and Correlation in Atomic Collisions

697 Pages·1980·17.82 MB·English

by  I. E. McCarthy (auth.)

Coherence and
Correlation in
Atomic Collisions
PHYSICS OF ATOMS AND MOLECULES
Series Editors:
P. G. Burke, The Queen's University ofB elfast,
Northern Ireland and Daresbury Laboratory, Science Research Council,
Warrington, England
and
H. Kleinpoppen, Institute of Atomic Physic8, University of Stirling, Scotland
Editorial Advisory Board:
R.B. Bernstein (New York, U.S.A.) W. Hanle (Giessen, Germany)
J.C. Cohen-Tannoudji (Paris, France) W.E. Lamb, Jr. (Tucson, U.S.A.)
R.W. Crompton (Canbe"a, Australia) P.-O. Lowdin (Gainesville, U.S.A.)
J.N. Dodd (Dunedin, New Zealand) M.R.C. McDowell (London,U.K.)
G.F. Drukarev (Leningrad, U.S.S.R.) K.Takayanagi(Tokyo,Japan)
1976:
ELECTRON AND PHOTON INTERACTIONS WITH ATOMS
Edited by H. Kleinpoppen and M.R.C. McDowell
1978:
PROGRESS IN ATOMIC SPECTROSCOPY, Parts A and B
Edited by W. Hanle and H. Kleinpoppen
1979:
ATOM-MOLECULE COLLISION THEORY: A Guide for the Experimentalist
Edited by Richard B. Bernstein
1980:
COHERENCE AND CORRELATION IN ATOMIC COLLISIONS
Edited by H. Kleinpoppen and J.F. Williams
1n preparation:
THEORY OF ELECTRON-ATOM COLLISIONS
By P.G. Burke and c.J. Joachain
VARIATIONAL MEmODS IN ELECTRON-ATOM SCATTERING THEORY
By R. K. Nesbet
DENSITY MATRIX FORMALISM AND APPLICATIONS IN PHYSICS
By K. B. Blum
A Continuation Order Plan is available for this series. A continuation order will
bring delivery of each new volume immediately upon publication. Volumes are
billed only upon actual shipment. For further information please contact the
publisher.
Coherence and
Correlation in
Atomic Collisions
Edited by
H. Kleinpoppen
Institute of Atomic Physics
University of Stirling
Stirling, Scotland
and
lEWilliams
Department ofP ure and Applied Physics
Queen's University
Belfast, Northern Ireland
Plenum Press . New York and London
Library of Congress Cataloging in Publication Data
Main entry under title:
Coherence and correlation in atomic collisions.
(physics of atoms and molecules)
Includes index.
1. Coherence (Nuclear physics) - Congresses. 2. Angular correlations (Nuclear
physics) - Congresses. 3. Collisions (Nuclear physics) - Congresses. I. Klein
poppen, Hans. II. Williams, J. F.
QC794.6.C58C66 539.7'54 79-15977
ISBN-13: 978-1-4613-2999-2 e-ISBN-13: 978-1-4613-2997-8
DOl: 10.1007/978-1-4613-2997-8
© 1980 Plenum Press, New York
A Division of Plenum Publishing Corporation
227 West 17th Street, New York, N.Y. 10011
Softcover reprint of the hardcover 1st edition 1980
All rights reserved
No part of this book may be reproduced, stored in a retrieval system, or transmitted,
in any form or by any means, electronic, mechanical, photocopying, microfilming,
recording, or otherwise, without written permission from the publisher
To Sir Harrie Massey, Sec. R.S.
GeG9 Suzuki Riddell Aydinol Matsuzawa Sandner McGregor Andersen Ramat Hultberg Hils Koschmieder Eminyan Rubin Malcolm M. Campbell
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Q~ E. Trefftz D. Golden J. W. McConkey K. Blum R. K. Nesbet V. Hertel 1. H. Ehrhardt B. Bederson Sir Harrie Massey E. McCarthy 1. D. H. Jaecks W. Raith J. Kessler U. Fano P. S. Farago F. H. Read A. Giardini-Guido
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1I111111
The International Workshop on
COHERENCE AND CORRELATION IN ATOMIC COLLISIONS
was given financial support by
Edwards High Vacuum
I.B.M. United Kingdom Ltd.
Intertechnique Ltd.
Ortec Ltd.
Plenum Press
Spectra-Physics Ltd.
University College, London
University of Bielefeld
University of Stirling
Scientific Advisory Committee of the International Workshop
P.S. Farago, D. E. Golden, H. Kelinpoppen, J. Macek,
I.E. McCarthy, M.R.C. McDowell, W.R. Newell,
A. Niehaus, A. Schannann, J.F. Williams
Local and Programme Committee of the International Workshop
H. Kleinpoppen (Chainnan), H.O. Lutz, I. McGregor,
W.R. Newell (Secretary), J.F. Williams
Contents
Introduction. . . . . . . . . . . . . xiii
H. Kleinpoppen and J. F. Williams
1. Theory of (e,2e) Experiments
I. E. McCarthy
2. Impulsive (e,2e) Experiments: A Tool to Test Different Ionization Theories
and Electronic Structure of Atoms and Molecules . . . . . . . . .. 13
A. Giardini-Guidoni, R. Camilloni, and G. Stefani
3. Low-Energy Electron Impact Ionization with Completely Determined Kinematics 41
H. Ehrhardt, K. Jung, and E. Schubert
4. Coincidence Investigations of Electron-Hydrogen Collisions 59
Erich Weigold
5. Correlation in Multiple Escape near Threshold. 67
H. Klar
6. Interference Effects in the Multiphoton Ionization of Atoms 79
K. C. Mathur
7. Correlation in Electron-Atom Excitation 85
D. E. Golden and N. C. Steph
8. Angular Correlation Parameters for Excitation of the 2'P State of Helium and
the 2p State of Atomic Hydrogen . . . . . . . . . . . .. 97
M. T. Hollywood, A. Crowe, and J. F. Williams
9. New Aspects in Electron-Photon Coincidence Experiments 109
H. Kleinpoppen and I. McGregor
10. The Possibility of a Complete Determination of Scattering Amplitudes for
S -+ D Excitation by Electron-Photon Coincidence Measurements . 121
Gerard Nienhuis
II. Threshold and Pseudothreshold Excitation of Molecules by Electron Impact 133
K. Blum
ix
x Contents
12. Polarization Correlation Measurements in Ar and HI . 145
J. W. McConkey and 1. C. Malcolm
13. Effect of Optical Potentials on Angular Correlation Parameters 167
D. H. Madison
14. The Calculation of Orientation and Alignment Parameters for the Electron
Impact Excitation of the 31P State of He in the First-Order Many-Body
Theory. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179
G. D. Meneses and Gy. Csanak
15. Electron-Photon Correlations in Bremsstrahlung Processes. 187
Werner Nakel
16. Angular Distribution and Polarization of x-Ray Radiation by Electron Impact
on Free Atoms . . . . . . . . . . . . . . . . . . . . . . . . . . 205
M. Aydinol, R. Hippler, 1. McGregor, and H. Kleinpoppen
17. Energy Dependence of the Alignment in Inner-Shell Ionization by Electron
Impact. . . . . . . . . . . . . . . . . . . . . . . . . . 215
W. Sandner, M. Weber, and W. Mehlhorn
18. Identification of States Excited by Collision: Current State of Theory . . . 223
U. Fano
19. Angular Correlation between Autoionization Electron and Scattered Ion in
Slow He+-He Collision. . . . . . . . . . . . . . . . . . . . . . . 229
R. Morgenstern and A. Niehaus
20. Coherence Effects in Postcollision Interactions in Electron Impact Experiments 243
Frank H. Read and John Comer
21. Collision-Stimulated Autoionization 257
V. I. Matveev and E. S. Parilis
22. Electronic Correlation in Electron-Atom Scattering . 269
R. K. Nesbet
23. Observation of the Postcollision Interaction in the Scattered-Electron Spectra
of Helium ............... . 271
D. Roy
24. Excitation of Autoionizing States in Noble Gases by Fast Electrons 283
V. V. Balashov, A. N. Grum-Grzhimailo, N. M. Kabachnik, A. 1. Magunov, and
S. 1. Strakhova
25. The Postcollision Interaction as a Manifestation of Many-Electron Correlations 297
M. Ya. Amusia, M. Yu. Kuchiev, and S. A. Sheinerman
26. Coincidence Studies of Inner-Shell Excitation in Ion-Atom Collisions 315
H. O. Lutz, N. Luz, S. Sackmann, W. Jitschin, and R. Hippler
Contents xi
27. Coherent Production of Positrons in Heavy-Ion Collisions 331
J. Reinhardt, B. Muller, and W. Greiner
28. Alignment of Core-Excited Autoionizing Be+ Projectiles Excited in Single Gas
Collisions. . . . . . . . . . . . . . . . . . . . . . . . . 361
P. Bisgaard, R. Bruch, P. Dahl, and M. Rndbro
29. Interference Effects in K-Shell Vacancy Sharing. 369
R. Schuch, G. Nolte, W. Lichtenberg, and H. Schmidt-Bocking
30. Coherent Excitation of Ionic States by Correlated Collisions in a Crystal Lattice 373
S. Datz
31. Alignment, Orientation, and the Beam-Foil Interaction 387
R. M. Schectman, L. J. Curtis, and H. G. Berry
32. Polarized-Photon, Scattered-Ion Coincidence Study of Mg+ Collisions with
He, Ne, and Ar ......................... 395
N. Andersen, T. Andersen, C. L. Cocke, and E. Horsdal Pedersen
33. Coherence Effects in Heavy-Ion-Atom Collisions 403
C. Bottcher
34. Excitation of Cd(53P1) and Cd(51P1) in Na+-Cd Collisions: Optical Polarization
and Population of Magnetic Sublevels. . . . . . . . . . . . . . . . 413
Vincenzo Aquilanti, Piergiorgio Casavecchia, and Gaia Grossi
35. Spin Polarization in lon-Atom Collisions Studied with Ion Storage Techniques 423
Hans A. Schuessler
36. Scattering Experiments with Laser-Excited Atoms 437
R. Duren
37. Orbital Angular Momentum State Coherence in Charge Transfer to the n = 2
Hydrogen Levels by Fast Protons in Gases . . . . . . . . . . 447
L. Liljeby, S. Mannervik, S. Hultberg, and I. A. Sellin
38. Photon-Scattered Atom Coincidence Study with Vector Polarization Analysis
for K-Noble-Gas Collisions . . . . . . . . . . . . . . . . 457
L. Zehnle, E. Clemens, P. J. Martin, W. Schauble, and V. Kempter
39. Alignment and Orientation Measurements in He+-He and He+-H. Collisions 473
D. H. Jaecks, F. Eriksen, and L. Fornari
40. Simultaneous Electron-Photon Excitation of Atoms ........... 479
F. H. M. Faisal
41. Energy and Angular Momentum Exchanges between Two Electrons in a Coulomb
Field. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 493
H. G. M. Heideman
42. Oscillatory Structure of Excitation Functions in Atomic Collisions . 509
D. Hasselkamp, A. Scharmann, and K.-H. Schartner