Electron and positron impact experiments on metallic foils at the giessen positron source TEPOS

  • W. Faust
  • C. Hahn
  • M. Rückert
  • H. Schneider
  • A. Singe
  • I. Tobehn
Conference paper

Abstract

The sources TEPOS for slow positrons were installed at the Giessen 65 MeV electron linear accelerator. Ratios of K- and L-shell ionization cross-sections by electron and positron impact were measured on Au-/Ag-foils as function of the incident projectile energy. With energies near threshold a departure is observed of the ratio σ (e-)/σ(e+) from unity (increasing with decreasing energy).

Keywords

Tungsten 

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Copyright information

© Springer-Verlag 1991

Authors and Affiliations

  • W. Faust
    • 1
  • C. Hahn
    • 1
  • M. Rückert
    • 1
  • H. Schneider
    • 1
  • A. Singe
    • 1
  • I. Tobehn
    • 1
  1. 1.Abteilung Angewandte KernphysikStrahlenzentrum der Universität GiessenGiessenGermany

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