PHOTOIONIZATION OF ATOMIC-HYDROGEN IN AN ELECTRIC-FIELD

被引:41
作者
ALVAREZ, G
DAMBURG, RJ
SILVERSTONE, HJ
机构
[1] ACAD SCI LASSR, INST PHYS, RIGA 226006, LATVIA, USSR
[2] JOHNS HOPKINS UNIV, DEPT CHEM, BALTIMORE, MD 21218 USA
来源
PHYSICAL REVIEW A | 1991年 / 44卷 / 05期
关键词
D O I
10.1103/PhysRevA.44.3060
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
The photoionization cross section of atomic hydrogen in an electric field can be understood as the sum of resonance contributions. Each contribution is proportional to the imaginary part of the square of a complex transition-dipole matrix element divided by an energy denominator and has a naturally asymmetric line shape. The main features of experiments, including asymmetry of the lines, blue shift of maxima with respect to calculated resonances near zero energy, "field-induced" structure above zero energy, and increasing "background" that begins above the classical saddle-point energy, are reproduced via variational calculations of the resonance energies and wave functions in parabolic coordinates.
引用
收藏
页码:3060 / 3082
页数:23
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