Multiple diffraction effects in neutron single-crystal diffractometry

Abstract

The n-beam dynamical theory of diffraction is applied to multiple neutron diffraction. A computer program has been adapted to the neutron case from one originally developed for high energy electron diffraction in reflection. The integrated intensities are computed for the two and multibeam cases of the 002 reflection and compared with experiment. It is shown that only a negligible fraction of the incident beam satisfies the conditions for multiple diffraction.