On the Use of the Kramers-Henneberger Hamiltonian in Multi-photon Ionization Calculations
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...[Show more]
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|Source:||Journal of Physics B: Atomic, Molecular and Optical Physics|
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