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The European Physical Journal D

, Volume 42, Issue 3, pp 369–372 | Cite as

Perturbative calculation of the cross section in double ionization by high-energy Compton scattering

  • Z. KalimanEmail author
  • K. Pisk
  • T. Surić
Atomic Physics

Abstract.

In this paper we investigate double ionization in high-energy Compton scattering from the He-atom including both the shake-off mechanism and a perturbative correction to that mechanism. The correction is calculated in second-order perturbation theory and includes Coulomb electron-electron interaction in addition to the correlation in the ground state of the He-atom. Our calculations for the ratio of double to single cross section cover the range from 30 to 300 keV of impact photon energy and explain the slow convergence of the ratio towards the asymptotic value.

PACS.

32.80.Fb Photoionization of atoms and ions 32.80.Cy Atomic scattering, cross sections, and form factors; Compton scattering 

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Copyright information

© EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2007

Authors and Affiliations

  1. 1.Department of Physics - Faculty of Arts and Sciences, University of RijekaRijekaCroatia
  2. 2.Rudjer Bošković InstituteZagrebCroatia

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