Fully determined (e,3e) experiments for the double ionization of helium

被引：93

作者：

Taouil, I ^{[1
]}

Lahmam-Bennani, A ^{[1
]}

Duguet, A ^{[1
]}

Avaldi, L ^{[1
]}

机构：

[1] Univ Paris 11, URA D0281, Collis Atom & Mol Lab, F-91405 Orsay, France

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.81.4600

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Angular distributions of the two ejected electrons following electron impact double ionization of helium have been measured using a multicoincidence multiangle (e,3e) spectrometer at an incident energy similar to 5.5 keV and equal outgoing energies E-b = E-c = 10 eV. The measured distributions are similar to photodouble ionization (hv, 2e) ones, but with evidence of additional nondipolar contributions which tend to till up the characteristic node at the mutual angle theta(bc) = 180 degrees. They are also in satisfactory agreement with recent (e, 3e) calculations. [S0031-9007(98)07708-4].

引用

页码：4600 / 4603

页数：4

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