Radiation emission of fast electrons in collisions with "ion-sphere" in dense plasmas

Radiative emission of fast electrons in collision with an "ion-sphere" electron distribution in dense plasmas is under consideration. The electron structure of the ion sphere is calculated ab initio using self-consistent solution of both bound and free electron distribution inside the sphere. Two radiation channels are included: emission of the colliding electron itself in static potential (conventional or static Bremsstrahlung) and the emission of "ion sphere" medium due to its polarization by the colliding electron (polarization Bremsstrahlung). The last one is calculated in the frame of local plasma density approximation. Interference between conventional and polarization Bremsstrahlung is taken into account. It is shown that spectral cross section of the process has characteristic features depending on plasma density and ionization stage of plasma ions.