Shapes of polarization-induced resonances in stimulated Bremsstrahlung spectra

In the frame of fixed classical electron current approximation the cross-sections of the stimulated Bremsstrahlung (SBr) on highly charged ions (HCI) with the core are studied. The polarization of the HCI core in the laser field is taken into consideration as well as the interference between polarization and standard (static) SBr channels. Spectral and intensity (with respect to the laser field strength) analysis of the SBr cross-sections is made for the near-resonant transitions in the alkali-like HCI core with (i) Δn=0 and (ii) Δn=1. In the first case the influence of the fine-splitting of the near-resonant transition on the SBr line shape is investigated. In the second case the nondipole interaction between incident electron and HCI core is analyzed in Coulomb approximation for projectile trajectory