Influence of the Laser-Induced Continuum Structure on Cross Sections of the Over Threshold Scattering of Photons on Atom

摘要

Process of photon scattering on atoms is considered at energy above the ionization threshold. Influence of the resonant structure in the continuum, induced by a laser field due to coupling with the level 4~(1)S in helium, on the cross sections of elastic and inelastic scattering of a probe radiation on atom in the meta-stable state 2~(1)S is theoretically investigated. In the rotating wave approximation approach dependences of resonant scattering cross sections on the probe and laser radiation characteristics are obtained. The frequency and polarization dependences of the scattering cross sections to the final states of atom 1~(1)S, 2~(1)S and 4~(1)S are calculated.