Hyperfine Interactions

, Volume 89, Issue 1, pp 119–125 | Cite as

Absolute cross-section measurements of inner-shell ionization

  • Hans Schneider
  • Ingo Tobehn
  • Frank Ebel
  • Rainer Hippler
Invited Papers Session 4. Inner-Shell Ionization

Abstract

Cross section ratios for K- and L-shell ionization of thin silver and gold targets by positron and electron impact have been determined at projectile energies of 30–70 keV. The experimental results are confirmed by calculations in plane wave Born approximation (PWBA) which include an electron exchange term and account for the deceleration or acceleration of the incident projectile in the nuclear field of the target atom. We report first absolute cross sections for K- and L-shell ionization of silver and gold targets by lepton impact in the threshold region. We have measured the corresponding cross sections for electron (e) impact with an electron gun and the same experimental set-up.

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Copyright information

© J.C. Baltzer AG, Science Publishers 1994

Authors and Affiliations

  • Hans Schneider
    • 2
  • Ingo Tobehn
    • 2
  • Frank Ebel
    • 2
  • Rainer Hippler
    • 3
  1. 1.Festo DidaktikDenkendorfGermany
  2. 2.Strahlenzentrum der Universität GiessenGiessenGermany
  3. 3.Fakultät für PhysikUniversität BielefeldBielefeldGermany

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