K, L, and M shell generalized oscillator strengths and ionization cross sections for fast electron collisions

R. D. Leapman, Peter Rez, D. F. Mayers

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Abstract

Generalized oscillator strengths and ionization cross sections by fast electron impact are calculated for K, L, and M shells. A nonrelativistic Hartree-Slater program is used to generate the initial states as well as the continuum wave functions. Core edge shapes and their dependence on momentum transfer are computed within this atomic model up to some tens or hundreds of eV above threshold. Some comparisons are made with experimental measurements and though details near threshold are not predicted, the gross shape of the spectrum is in quite good agreement with these data. While we confirm that the hydrogenic model is a reasonable approximation for K edges, we expect our computations to be useful in obtaining more accurate total cross sections for L and M shell excitation.

Original languageEnglish (US)
Pages (from-to)1232-1243
Number of pages12
JournalThe Journal of Chemical Physics
Volume72
Issue number2
Publication statusPublished - 1980
Externally publishedYes

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ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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