Coherent X-Ray Radiation Generated by a Divergent Beam of Relativistic Electrons in a Single Crystal in the Beam-Axis Direction

• Published in: Surface investigation, x-ray, synchrotron and neutron techniques Vol. 15; no. 4; pp. 717 - 722
• Main Authors: Shkuropat, D. O., Blazhevich, S. V., Gorlov, A. S., Noskov, A. V., Fedoseev, A. E.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-07-2021; Springer Nature B.V
• Subjects: Angular velocity; Asymmetry; Chemistry and Materials Science; Crystal surfaces; Electron beams; Materials Science; Radiation; Relativistic effects; Single crystals; Surfaces and Interfaces; Thin Films; parametric Х-ray radiation; beam of relativistic electrons; single crystal; transition radiation
• ISSN: 1027-4510; 1819-7094
• DOI: 10.1134/S1027451021040170

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A theory of coherent X-ray radiation generated by a beam of relativistic electrons in a single crystal in the direction close to the electron-beam axis is developed in the Laue scattering geometry. The theory takes into account asymmetry of the electron-field reflection with respect to the crystal surface and the electron-beam divergence. Expressions describing the spectral-angular densities of parametric X-ray radiation near the electron-velocity direction, of transition radiation, and their interference are obtained. The influence of the electron-beam divergence and asymmetry of the electron-field reflection with respect to the target surface on the spectral-angular radiation densities is studied.