Single ionization by positron impact

被引：76

作者：

Moxom, J

Ashley, P

Laricchia, G

机构：

[1] Department of Physics and Astronomy, University College London, London WC1E 6BT, Gower Street

来源：

CANADIAN JOURNAL OF PHYSICS | 1996年 / 74卷 / 7-8期

关键词：

D O I：

10.1139/p96-053

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The single direct ionization cross sections for positron scattering (sigma(i)(+)) on He, Ar, Kr, and H-2 were measured and compared with existing data and the corresponding cross sections for electron impact (sigma(i)(-)). At most impact energies the present data for He and H-2 are in reasonable accord with other measurements and, in the case of He, with some of the available calculations. At low energies sigma(i)(-) is found to increase more slowly than sigma(i)(-), probably due to the importance of Ps formation in this energy range.

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页码：367 / 372

页数：6

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