A coincidence study of electron and positron impact ionization of Ar (3p) at 1 keV

被引：9

作者：

Campeanu, Radu I. ^{[1
]}

Walters, James H. R. ^{[2
]}

Whelan, Colm T. ^{[3
]}

机构：

[1] York Univ, Dept Phys & Astron, Toronto, ON M3J 1P3, Canada

[2] Queens Univ Belfast, Ctr Theoret Atom Mol & Opt Phys, Sch Math & Phys, Belfast BT7 1NN, Antrim, North Ireland

[3] Old Dominion Univ, Dept Phys, Norfolk, VA 23529 USA

来源：

EUROPEAN PHYSICAL JOURNAL D | 2015年 / 69卷 / 10期

关键词：

CROSS-SECTIONS; SCATTERING; ATOMS; HELIUM;

D O I：

10.1140/epjd/e2015-60315-1

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Distorted-wave calculations of the triple differential cross section (TDCS) are presented for electron and positron impact ionization of Ar(3p) in coplanar asymmetric geometry at an impact energy of 1 keV and are compared with a recent experiment. The experiment indicates that the positron TDCS is generally larger than the equivalent electron TDCS. It is shown that the magnitude of the TDCS is extremely sensitive to the energy of the ejected electron and that only when the cross section is averaged over energy do we get a reasonable agreement with experiment.

引用

页码：1 / 5

页数：5

共 18 条

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