On Influence of the Parameters of a Layered Target and Electron Beam on Diffracted Transition and Parametric X-Ray

The paper considers parametric X-ray radiation (PXR) and diffracted transition radiation (DTR) of a beam of relativistic electrons crossing a target with a periodic layered structure in the Bragg scattering geometry. The general case of asymmetric electron reflection relative to the target surface is considered, that is, when the target layers occupy a place at right angles to its surface. Within the framework of the two-wave approximation of the dynamic theory of diffraction expressions are obtained that describe the angular densities of PXR, DTR and their interference. Computational calculations of the angular densities are carried out for various values of the target parameters and a variety of quantities. The density-to-flow ratio depends on the density and on the thickness-to-thickness ratio of the periodic structure. At a large electron value, the angular dependence of the DTR on the consumed mass increases.