Dynamic theory coherent X-ray radiation by beam of relativistic electrons in single-crystal

The dynamic theory of coherent X-ray radiation by divergent beam of relativistic electrons crossing a single-crystal plate has been developed in Bragg scattering geometry. Numerical calculations of parametric X-ray and diffracted transition radiation angular densities has been made using their averaging by two-dimensional Gauss distribution as the angular distribution of electrons in the beam. It has been shown that the influence of divergence of the high-energy electron beam on DTR is much stronger than on PX