About new applications of parametric X-radiation for crystallography

A theoretical analysis of the parametric X-radiation (PXR) produced by the nonrelativistic electrons in an X-ray tube with a monocrystalline anode is presented. It is shown that PXR can be considered as a source of quasi-monochromatic X-radiation for laboratory dif-fraction experiments. The intensity of the PXR is comparable with the intensity of the characteristic radiation, but the frequency of the former can be varied in a wide range. Possible applications of the phenomenon for crystallography are discussed.