Triple-differential cross-sections for two-photon double ionization of He near threshold

被引：84

作者：

Hu, SX ^{[1
]}

Colgan, J ^{[1
]}

Collins, LA ^{[1
]}

机构：

[1] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 2005年 / 38卷 / 01期

关键词：

D O I：

10.1088/0953-4075/38/1/L05

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Complete two-photon break-up of He near threshold has been investigated by solving the time-dependent closing-coupling equations on a numerical lattice. We have obtained good agreement for the total double ionization cross-section with previous theoretical results. The triple-differential cross-sections exhibit interesting features as the two-photon energy approaches the threshold of double ionization. We found that two-electron ejection with equal energy sharing is most probable near the two-photon threshold, in contrast to the case away from threshold, where ejection with large unequal energy sharings is most probable.

引用

页码：L35 / L45

页数：11

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