Spectrum broadening effect in coherent x-ray radiation of a relativistic electron crossing a single-crystal plate

Abstract

Based on the dynamic diffraction theory, coherent x-ray radiation of a relativistic electron crossing a single-crystal plate at a constant velocity is considered in the Bragg geometryyesBS

Coherent X-Ray Radiation of a Relativistic Electron in a Bilayer Amorphous Layer – Single Crystal Target

“…When a relativistic electron transverses the single crystal layer of the target, its Coulomb field is scattered on a system of parallel atomic planes of the crystal, producing parametric X-ray radiation (PXR) [7][8][9], with the PXR photons moving together with the DTR photons along the Bragg scattering direction. The process of coherent X-ray scattering of relativistic electrons in a crystal, including PXR and DTR, was developed in [10][11][12][13][14] within the framework of a two-wave approximation of the dynamic theory of X-ray diffraction. It is noteworthy that in [10,11] coherent X-ray radiation is treated in a particular case of symmetrical reflection, where the reflecting system of atomic planes of a crystal is parallel with respect to the surface of the target in the case of the Bragg scattering geometry and normal to it in the case of the Laue scattering geometry.…”

“…It is noteworthy that in [10,11] coherent X-ray radiation is treated in a particular case of symmetrical reflection, where the reflecting system of atomic planes of a crystal is parallel with respect to the surface of the target in the case of the Bragg scattering geometry and normal to it in the case of the Laue scattering geometry. In [12][13][14], a dynamic theory of coherent X-ray radiation of relativistic electrons in a crystal was developed for a general case of asymmetrical reflection of the electron's field with respect to the target surface, where the system of parallel reflecting layers of the target could be located at an arbitrary angle to the surface.…”