Ionization of a two-electron atom in a strong electromagnetic field

被引：2
|
作者：
Ovodova, OV
Popov, AM
Tikhonova, OV
机构：
[1] D. V. Skobeltsyn Research Institute for Nuclear Physics, M. V. Lomonosov Moscow State University
来源：
JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS | 1997年 / 85卷 / 02期
基金：
俄罗斯基础研究基金会;
关键词：
D O I：
10.1134/1.558272
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A one-dimensional model of a helium atom in an intense field of a femtosecond electromagnetic pulse has been constructed using the Hartree technique. ''Exact'' calculations have been compared to the approximations of ''frozen'' and ''passive'' electrons. A nonmonotonic dependence of the single-electron ionization probability on the radiation intensity has been detected. Minima in the ionization probability are due to multiphoton resonances between different atomic states due to the dynamic Stark effect. We suggest that the ionization suppression is due to the interference stabilization in this case. (C) 1997 American Institute of Physics.
引用
收藏
页码：257 / 263
页数：7
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