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1. 5. 2012.
Plateau structures in laser-assisted and laser-induced processes
We present a quantum-mechanical laser-assisted scattering theory and show how the rescattering effects can be described within the second Born approximation. Also, we use two versions of the atomic (molecular) strong-field approximation in order to describe high-order above-threshold ionization. In the improved strong-field approximation, the rescattering of the ionized electron off the parent ion is described within the first-order Born approximation. A better approximation is the so-called low-frequency approximation in which the elastic rescattering amplitude is calculated exactly.