I A Ivanov and A S Kheifets 2005 J. Phys. B: At. Mol. Opt. Phys. 38 2245 doi:10.1088/0953-4075/38/13/016
I A Ivanov1 and A S Kheifets
Show affiliationsWe 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.
32.80.Rm Multiphoton ionization and excitation to highly excited states
Issue 13 (14 July 2005)
Received 11 March 2005, in final form 21 April 2005
Published 14 June 2005
I A Ivanov and A S Kheifets 2005 J. Phys. B: At. Mol. Opt. Phys. 38 2245
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