Strong-field approximation for intense-laser-atom processes: The choice of gauge

被引：156
作者：
Bauer, D [1 ]
Milosevic, DB
Becker, W
机构：
[1] Max Planck Inst Kernphys, D-69117 Heidelberg, Germany
[2] Univ Sarajevo, Fac Sci, Sarajevo 71000, Bosnia & Herceg
[3] Max Born Inst, D-12489 Berlin, Germany
来源：
PHYSICAL REVIEW A | 2005年 / 72卷 / 02期
关键词：
D O I：
10.1103/PhysRevA.72.023415
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The strong-field approximation (SFA) can be and has been applied in both length gauge and velocity gauge with quantitatively conflicting answers. For ionization of negative ions with a ground state of odd parity, the predictions of the two gauges differ qualitatively: in the envelope of the angular-resolved energy spectrum, dips in one gauge correspond to humps in the other. We show that the length-gauge SFA matches the exact numerical solution of the time-dependent Schrodinger equation.
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页数：5
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