Coherence and Correlation in Atomic Collisions

  • H. Kleinpoppen
  • J. F. Williams

Table of contents

  1. Front Matter
    Pages i-xiv
  2. I. E. McCarthy
    Pages 1-11
  3. D. E. Golden, N. C. Steph
    Pages 85-96
  4. H. Kleinpoppen, I. McGregor
    Pages 109-120
  5. J. W. McConkey, I. C. Malcolm
    Pages 145-166
  6. M. Aydinol, R. Hippler, I. McGregor, H. Kleinpoppen
    Pages 205-214

About this book

Introduction

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.

Keywords

Cross section atom atomic collision autoionization collision elastic scattering electrons energy excited atoms information molecule photon scattering spectra spin exchange

Editors and affiliations

  • H. Kleinpoppen
    • 1
  • J. F. Williams
    • 2
  1. 1.Institute of Atomic PhysicsUniversity of StirlingStirlingScotland
  2. 2.Department of Pure and Applied PhysicsQueen’s UniversityBelfastNorthern Ireland

Bibliographic information

  • DOI https://doi.org/10.1007/978-1-4613-2997-8
  • Copyright Information Plenum Press, New York 1980
  • Publisher Name Springer, Boston, MA
  • eBook Packages Springer Book Archive
  • Print ISBN 978-1-4613-2999-2
  • Online ISBN 978-1-4613-2997-8
  • About this book