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

I. A. Ivanov; A. S. Kheifets

doi:10.1088/0953-4075/38/13/016

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

I. A. Ivanov^*, A. S. Kheifets

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	2245-2255
Number of pages	11
Journal	Journal of Physics B: Atomic, Molecular and Optical Physics
Volume	38
Issue number	13
DOIs	https://doi.org/10.1088/0953-4075/38/13/016
Publication status	Published - 14 Jul 2005

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AB - 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.

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

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