Non-perturbative approach to multiphoton ionisation of the hydrogen and helium atoms
Laser light intensities, currently obtained in the laboratories, make it possible to observe many multi-photon phenomena in the interaction of light and matter (such as multi-photon ionisation or MPI process). Theoretical description of such phenomena necessitates the use of essentially non-perturbative framework. We present such an approach based on the recasting of the Schrodinger equation for the system atom+field into a set of coupled integral equations of the Lippmann-Schwinger type.
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|Source:||Radiation Physics and Chemistry|
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