LASER-ASSISTED SCATTERING OF POLARIZED ELECTRONS AT HIGH-FIELD INTENSITIES

Qualitative and quantitative results of a relativistic calculation of the S-matrix transition amplitudes and cross sections for Mott scatter ing of initially polarized electrons in the presence of an ultraintens e single-mode laser field are presented. Exact Dirac-Volkov wave funct ions within a circularly polarized light field are used to describe th e ''dressed'' electron and the collisional stage with the Coulomb pote ntial is treated in the first-Born approximation. We discuss the influ ence of the laser field on the degree of polarization of the scattered electrons, depending on its intensity, and consider effects arising i n different geometries in ultrastrong fields.