Single-quantum annihilation of positrons with K-shell electrons

Takeshi Mukoyama, Hiromasa Mazaki, Sakae Shimizu

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Abstract

Reevaluations of the total K-shell cross sections of single-quantum annihilation of positrons have been made by taking into account the L-shell contribution. Z dependence of the cross section was studied for five high-Z elements, Z=50,73,79,82,and 92, and for 300-keV positrons. Energy dependence has also been investigated for the last two elements in the energy region of 250-400 keV. Comparisons with theoretical predictions including the screening effect are also made.

Original languageEnglish
Pages (from-to)82-86
Number of pages5
JournalPhysical Review A
Volume20
Issue number1
DOIs
Publication statusPublished - Jan 1 1979

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ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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