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
收藏
页码：L749 / L754
页数：6
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