Lippmann-Schwinger description of multiphoton ionization

Details Lippmann-Schwinger description of multiphoton ionization Lippmann-Schwinger description of multiphoton ionization

2005-02-04

arxiv.org/abs/physics/0502016v1

Physics

Atomic Physics

25 pages, 3 figures

Scientific paper

10.1103/PhysRevA.71.043405

We outline a formalism and develop a computational procedure to treat the process of multiphoton ionization (MPI) of atomic targets in strong laser fields. We treat the MPI process nonperturbatively as a decay phenomenon by solving a coupled set of the integral Lippmann-Schwinger equations. As basic building blocks of the theory we use a complete set of field-free atomic states, discrete and continuous. This approach should enable us to provide both the total and differential cross-sections of MPI of atoms with one or two electrons. As an illustration, we apply the proposed procedure to a simple model of MPI from a square well potential and to the hydrogen atom.

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