Coherent X-Ray Radiation Generated by a Beam of Relativistic Electrons in a Monocrystal in Direction of the Beam Axis
The theory of coherent X-ray radiation excited by a beam of relativistic electrons in a single crystal in the direction close to the axis of the electron beam is developed in Laue scattering geometry. The theory takes into account the asymmetry of the reflection of the electron field relative to the surface of the crystal and the divergence of the electron beam. Expressions are obtained that describe the spectral-angular densities of parametric Х-ray radiation near the direction of electron velocity, transition radiation, and their interference. The influence of the electron beam divergence, as well the asymmetry of the reflection relative to the target surface of the electron field on the spectral-angular density of radiation is studied.