TOTAL IONIZATION CROSS-SECTIONS OF HE, H-2 AND AR BY POSITRON-IMPACT

被引：33

作者：

MOXOM, J

LARICCHIA, G

CHARLTON, M

机构：

[1] Department of Physics and Astronomy, University College London, London

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 1993年 / 26卷 / 13期

关键词：

D O I：

10.1088/0953-4075/26/13/009

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Total positron impact ionization cross sections, including contributions from positronium formation, have been measured for He, H-2 and Ar from below the positronium formation threshold, E(Ps), up to 60 eV, 31 eV and 41 eV respectively. These cross sections have been subtracted from corresponding total cross section measurements and a small decrease in the elastic cross section between E(Ps) and the threshold for excitation has been deduced for all three targets.

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页码：L367 / L372

页数：6

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