Hyperfine Interactions

, Volume 76, Issue 1, pp 319–323 | Cite as

Experiments at the Giessen source TEPOS with low energy positrons

  • H. Schneider
  • I. Tobehn
  • M. Rückert
  • U. Brinkmann
  • R. Hippler
Section 6: Poster Session Positrons And Positronium

Abstract

The TEPOS facility at the Giessen LINAC delivers intense positron beams in the energy range between some eV and 6 keV; with postacceleration up to 80 keV. Results for remoderation and positron storage will be discussed. Further the energy-loss of positrons in thin aluminium foils at incident energies of 6–20 keV was measured. Cross sections for K- and L-shell ionization of thin silver and gold targets by positron and electron impact were determined at projectile energies of 30–70 keV. The experimental results are presented in detail; they are confirmed by calculations in plane wave Born approximation (PWBA) which include an electron exchange term and take into account the deceleration or acceleration of the incident projectile in the nuclear field of the target atom.

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Copyright information

© J.C. Baltzer AG, Science Publishers 1993

Authors and Affiliations

  • H. Schneider
    • 1
  • I. Tobehn
    • 1
  • M. Rückert
    • 1
  • U. Brinkmann
    • 2
  • R. Hippler
    • 2
  1. 1.Strahlenzentrum der Universität GiessenGiessenGermany
  2. 2.Fakultät für PhysikUniversität BielefeldBielefeld 1Germany

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