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Electron Scattering from Heavy Atoms

  • K. Bartschat
  • P. G. Burke
Part of the Physics of Atoms and Molecules book series (PIDF)

Abstract

Electron-atom scattering has been studied experimentally and theoretically for many years. Experimentally, not only can elastic and inelastic cross sections now be measured, but the use of high-resolution polarized electron and atom beams enables observables such as the spin polarization, asymmetry functions, and Stokes’ parameters to be determined. Reviews of these developments have been given by Blum and Kleinpoppen,(1) Hanne,(2) Slevin,(3) and Kessler.(4) In some cases, it is even possible to perform so-called “complete” experiments (Bederson(5,6)), where all the information about the scattering process—namely, the magnitudes and the relative phases of the scattering amplitudes—are determined. A fundamental experiment of this type was the first electron-photon coincidence experiment performed in Hans Kleinpoppen’s group at Stirling (Eminyan et al. (7)). In this experiment the light emitted in the decay of the (1s2p) 1 P state of helium excited by electron impact was observed in coincidence with the scattered electron. This experiment enabled the relative phase and relative magnitude of the two relevant scattering amplitudes to be determined, although the absolute magnitudes of these amplitudes still have to await an absolute cross-section measurement.

Keywords

Differential Cross Section Heavy Atom Reduce Density Matrix Electron Impact Excitation Distort Wave Born Approximation 
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

© Springer Science+Business Media New York 1988

Authors and Affiliations

  • K. Bartschat
    • 1
  • P. G. Burke
    • 2
  1. 1.Institute for Theoretical Physics IUniversity of MünsterMünsterWest Germany
  2. 2.Department of Applied Mathematics and Theoretical PhysicsThe Queen’s University of BelfastBelfastNorthern Ireland

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