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Influence of the multiple scattering of relativistic electrons on the line width of the backward Parametric X-ray Radiation in the absence of photo absorption

Research paper by Mehdi Tabrizi

Indexed on: 05 Feb '15Published on: 05 Feb '15Published in: Physics - Accelerator Physics



Abstract

The multiple scattering effect on the line width of the backward Parametric X-ray Radiation (PXR) in the extremely Bragg geometry, produced by low energy relativistic electrons traversing a single crystal, is discussed. It is shown that there exist conditions, when the influence of photo absorption on the line width can be neglected, and the only multiple scattering process of relativistic electrons in crystal leads to the PXR lines' broadening. Based on the obtained theoretical and numerical results for the line width broadening, caused by the multiple scattering of $30$ and $50$ MeV relativistic electrons in a Si crystal of varying thicknesses, an experiment could be performed to help to reveal the scattering effect on the PXR lines in the absence of photo absorption. This leads to a more accurate understanding of the influence of scattering phenomenon on the line width of the backward PXR and helps to a better construction of a table-top narrow bandwidth X-ray source for scientific and industrial applications.