Excitation-ionization of helium to He+(n=2) at 365.8 eV

被引：22

作者：

Marchalant, PJ

Rouvellou, B

Rasch, J

Rioual, S

Whelan, CT

Pochat, A

Madison, DH

Walters, HRJ

机构：

[1] Univ Cambridge, Dept Appl Math & Theoret Phys, Cambridge CB3 9EW, England

[2] Univ Bretagne Occidentale, Lab Collis Elect & Atom, F-29285 Brest, France

[3] Queens Univ Belfast, Dept Appl Math & Theoret Phys, Belfast BT7 1NN, Antrim, North Ireland

[4] Univ Missouri, Dept Phys, Rolla, MO 65401 USA

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 2000年 / 33卷 / 20期

关键词：

D O I：

10.1088/0953-4075/33/20/10e

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A second Born calculation of the (e, 2e) triple differential cross section for excitation-ionization of helium to He+ (n = 2) in coplanar asymmetric geometry is found to be in excellent agreement with recent (relative) measurements of Rouvellou et al (Rouvellou B, Rioual S, Pochat A, Tweed R J, Langlois J, Nguyen Vien G and Robaux O 2000 J. Phys. B: At. Mel. Opt. Phys. 33 L599). The second Born cross section is very much larger by about a factor of four, than the corresponding first Born cross section, a trend that is consistent with absolute total cross section measurements for ionization to He+(2p) at the same impact energy.

引用

页码：L749 / L754

页数：6

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