On the use of the Kramers-Henneberger Hamiltonian in multi-photon ionization calculations

被引：8

作者：

Ivanov, IA ^{[1
]}

Kheifets, AS ^{[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 | 2005年 / 38卷 / 13期

关键词：

D O I：

10.1088/0953-4075/38/13/016

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We employ the Kramers-Henneberger Hamiltonian for time-independent calculations of two-photon ionization of atoms with one and two electrons. As compared to the electromagnetic interaction in the length and velocity gauges, the presently employed Kramers-Henneberger gauge has an advantage of the dipole matrix elements for the free-free electron transitions being finite and well-defined quantities. This circumstance simplifies considerably the computations and allows us to obtain accurate results for the two-photon ionization of realistic atomic systems.

引用

页码：2245 / 2255

页数：11

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