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Coincidence Studies of Electron and Photon Impact Ionization

  • Book
  • © 1997

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Part of the book series: Physics of Atoms and Molecules (PAMO)

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Table of contents (36 chapters)

  1. Multiple Scattering Effects in High-Energy Electron Molecule Ionization of H2

  2. Parametrisation of TDCS in a Plane

  3. An Explanation of the Structure Observed in Out-Of-Plane Symmetric Measurements on Helium

  4. On the Addition Theorem for Jacobi Polynomials

  5. Progress Report on Relativistic (e,2e) Processes

  6. Structure of the Triply Differential Cross Section in the Recoil Region in Relativistic Electron Impact Ionization

  7. Coulomb Boundary Conditions for Relativistic (e,2e) Processes

  8. Spin Effects in the (e,2e) Cross Sections of Xenon

  9. Measurements of Spin Polarized (e,2e) Processes at 54.4 eV

  10. Is There Any New Physics in Spin Dependent (e,2e) Collisions?

  11. Electron-Momentum Spectroscopy of Solids by the (e,2e) Reaction

  12. Valence Band Reconstruction in Graphite by Grazing Incidence (e,2e) Spectroscopy

  13. Energy Distribution of Correlated Electron Pairs Excited by Low Energy Electrons from W(001) Measured by a Time-Of-Flight (e,2e) Spectrometer

  14. Electron Impact Ionization of Hydrogenic Ions in Asymmetric Geometries

  15. Bethe-Ridge Effects in (e,2e) on H− (Using 6Dime)

  16. The Ehrhardt Prizes 1996

Keywords

About this book

The great advantage of coincidence measurements is that by suitable choice of the kinematical and geometrical arrangement one may probe delicate physical effects which would be swamped in less differential experiments. The measurement of the triple dif­ ferential and higher-order cross sections presents enormous technical difficulties, but refined experiments of this type provide an insight into the subtleties of the scattering process and offer a welcome, if severe, test of the available theoretical models. The last few years have been an exciting time to work in the field and much has been learned. Profound insights have been gleaned into the basic Coulomb few body problem in atomic physics: the experimental study of the fundamental (e,2e) processes on hydrogen and helium targets continues to add to our knowledge and indeed to challenge the best of our theoretical models; significant advances have been made in the understanding of the "double excitation problem," that is the study of ionization processes with two active target electrons: important measurements of (e,3e), (,),,2e), excitation-ionization and excitation autoionization have been reported and strides have been made in their theoretical description; the longstanding discrepancies between theory and experiment for relativistic (e,2e) processes were resolved, spin dependent effects predicted and ob­ served and the first successful coincidence experiments on surfaces and thin films were announced. Theory and experiment have advanced in close consort. The papers pre­ sented here cover the whole gambit of research in the field. Much has been achieved but much remains to be done.

Editors and Affiliations

  • University of Cambridge, Cambridge, England

    Colm T. Whelan

  • The Queen’s University of Belfast, Belfast, Northern Ireland

    H. R. J. Walters

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