Some experiments of neutron diffraction by flexurally vibrating and elastically bent Si single crystals

Abstract In this paper the neutron diffraction by lattices of Si single crystals for the sake of monochromator design was investigated and, for this purpose, it was performed on flexurally vibrating Si perfect single crystals and - for comparison - on a statically bent sample of Si. A significant increase of the integrated intensity of diffracted neutrons in the symmetric Bragg reflection condition was observed and measured in case of a vibrating Si crystal in dependence on the periodic elastic stress or displacement, in the case of the elastically bent crystal as a function of the radius of curvature.