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Coherence and Correlation in Atomic Collisions

  • Book
  • © 1980

Overview

Editors:
  1. H. Kleinpoppen

    1. Institute of Atomic Physics, University of Stirling, Stirling, Scotland

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  2. J. F. Williams

    1. Department of Pure and Applied Physics, Queen’s University, Belfast, Northern Ireland

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    You can also search for this editor in PubMed   Google Scholar

Part of the book series: International Studies in Economic Modelling (ISIM)

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Table of contents (55 chapters)

  1. Front Matter

    Pages i-xiv
    Download chapter PDF

  2. Theory of (e, 2e) Experiments

    • I. E. McCarthy
    Pages 1-11

  3. Impulsive (e, 2e) Experiments: A Tool to Test Different Ionization Theories and Electronic Structure of Atoms and Molecules

    • A. Giardini-Guidoni, R. Camilloni, G. Stefani
    Pages 13-40

  4. Low-Energy Electron Impact Ionization with Completely Determined Kinematics

    • H. Ehrhardt, K. Jung, E. Schubert
    Pages 41-58

  5. Coincidence Investigations of Electron-Hydrogen Collisions

    • Erich Weigold
    Pages 59-66

  6. Correlation in Multiple Escape near Threshold

    • H. Klar
    Pages 67-77

  7. Interference Effects in the Multiphoton Ionization of Atoms

    • K. C. Mathur
    Pages 79-84

  8. Correlation in Electron-Atom Excitation

    • D. E. Golden, N. C. Steph
    Pages 85-96

  9. Angular Correlation Parameters for Excitation of the 21P State of Helium and the 2p State of Atomic Hydrogen

    • M. T. Hollywood, A. Crowe, J. F. Williams
    Pages 97-108

  10. New Aspects in Electron-Photon Coincidence Experiments

    • H. Kleinpoppen, I. McGregor
    Pages 109-120

  11. The Possibility of a Complete Determination of Scattering Amplitudes for S → D Excitation by Electron-Photon Coincidence Measurements

    • Gerard Nienhuis
    Pages 121-132

  12. Threshold and Pseudothreshold Excitation of Molecules by Electron Impact

    • K. Blum
    Pages 133-144

  13. Polarization Correlation Measurements in Ar and H2

    • J. W. McConkey, I. C. Malcolm
    Pages 145-166

  14. Effect of Optical Potentials on Angular Correlation Parameters

    • D. H. Madison
    Pages 167-178

  15. 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

    • G. D. Meneses, Gy. Csanak
    Pages 179-186

  16. Electron-Photon Correlations in Bremsstrahlung Processes

    • Werner Nakel
    Pages 187-203

  17. Angular Distribution and Polarization of x-Ray Radiation by Electron Impact on Free Atoms

    • M. Aydinol, R. Hippler, I. McGregor, H. Kleinpoppen
    Pages 205-214

  18. Energy Dependence of the Alignment in Inner-Shell Ionization by Electron Impact

    • W. Sandner, M. Weber, W. Mehlhorn
    Pages 215-222

  19. Identification of States Excited by Collision: Current State of Theory

    • U. Fano
    Pages 223-228

  20. Angular Correlation between Autoionization Electron and Scattered Ion in Slow He+-He Collisions

    • R. Morgenstern, A. Niehaus
    Pages 229-242
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Keywords

About this book

H. KLEINPOPPEN AND J. F. WILLIAMS It has only very recently become possible to study angular correlations and coherence effects in different areas of atomic collision processes: These investigations have provided us with an analysis of experimental data in terms of scattering amplitudes and their phases, of target parameters such as orientation, alignment, and state multipoles, and also of coherence parameters (e. g. , the degree of coherence of excita­ tion). In this way the analysis of electron-photon, ion-photon, atom-photon, or electron-ion coincidences from electron-atom, ion-atom, or atom-atom collisional excitation has led to a breakthrough such that the above quantities represent most crucial and sensitive tests for theories of atomic collision processes. Similarly, the powerful (e, 2e) experiments (electron-electron coincidences from impact ionization of atoms) have attracted much attention where improved experimental studies and detailed theoretical description provide a wealth of information on either the col­ lisional ionization process or the atomic structure of the target atom. Interference effects, many-electron correlations, and energy and angular momen­ tum exchange between electrons in a Coulomb field playa decisive role in the under­ standing of postcollision interactions. New results on coherence effects and orienta­ tion and alignment in collisional processes of ions with surfaces and crystal lattices show links to relevant interference phenomena in atomic collisions. In small-angle elastic electron-atom scattering the effect of angular coherence can be studied in a crossed beam experiment.

Editors and Affiliations

  • Institute of Atomic Physics, University of Stirling, Stirling, Scotland

    H. Kleinpoppen

  • Department of Pure and Applied Physics, Queen’s University, Belfast, Northern Ireland

    J. F. Williams

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