Abstract

Features of incoherent x-ray radiation, produced by relativistic electrons with energy of several tens of MeV in crystals, are studied for observation angles exceeding ${\ensuremath{\gamma}}^{\ensuremath{-}1}$ (\ensuremath{\gamma} is the projectile Lorentz factor) and for all possible momentum transfer. It is shown that the fivefold cross section has a pronounced structure, with sharp maxima and a minimum. A Monte Carlo procedure is developed to obtain a threefold cross section and, then, contributions of different radiation mechanisms are analyzed. The results of numerical integration are compared with experimental ones, and a good agreement between them is verified. The obtained results can be used both in experimental investigations dealing with interaction of charged particle beams with crystals, and to optimize parameters of x-ray sources based on the coherent x-radiation process.

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