Perturbative calculation of two-photon double electron ionization of helium

被引：17

作者：

Ivanov, I. A. ^{[1
]}

Kheifets, A. S. ^{[1
]}

机构：

[1] Australian Natl Univ, Res Sch Phys Sci & Engn, Canberra, ACT 0200, Australia

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 2008年 / 41卷 / 09期

关键词：

D O I：

10.1088/0953-4075/41/9/095002

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report the total integrated cross-section (TICS) of two-photon double ionization of helium in the photon energy range from 40 to 54 eV. We compute the TICS in the lowest order perturbation theory (LOPT) using the length and Kramers-Henneberger gauges of the electromagnetic interaction. Our findings indicate that the LOPT gives results for the TICS in agreement with our earlier non-perturbative calculations.

引用

页数：9

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