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

被引：0
作者：
O. V. Ovodova
A. M. Popov
O. V. Tikhonova
机构：
[1] M. V. Lomonosov Moscow State University,D. V. Skobeltsyn Research Institute for Nuclear Physics
来源：
Journal of Experimental and Theoretical Physics | 1997年 / 85卷
关键词：
Helium; Elementary Particle; Quantum Field Theory; Electromagnetic Field; Radiation Intensity;
D O I：
暂无
中图分类号：
学科分类号：
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.
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页码：257 / 263
页数：6
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