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The Random Phase Approximation with Exchange

  • Göran Wendin
Part of the NATO Advanced Study Institutes Series book series (SPEPO, volume 18)

Abstract

A suitable subtitle for these lectures would be “Many-electron theory of photoionization in atoms” in order to indicate that the random phase approximation with exchange (RPAE) is only one out of several possible approximations and also that we shall focus attention on continuum photoionization processes rather than on transitions to bound states. A continuum photoionization cross section studied over a large range of energies gives information about the dynamical behaviour of the atomic electrons and theoretical calculations have to account for the whole range between very slow and very fast photoelectrons. The purpose of these lectures is to discuss the applicability of the RPAE in relation to the type of atom, the type of transition and the photoelectron energy considered. We shall also see examples of how the RPAE can be improved by inclusion of double excitations accounting for relaxation of the frozen core, shake off and Auger transitions.

Keywords

Random Phase Approximation Giant Dipole Resonance Photoionization Cross Section Double Excitation Hartree Equation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Plenum Press, New York 1976

Authors and Affiliations

  • Göran Wendin
    • 1
  1. 1.Institute of Theoretical PhysicsGöteborg 5Sweden

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