Accessible reciprocal-space region for non-coplanar Bragg and Laue geometries

The correct three-dimensional shape of the accessible reciprocal-space region for a given plane of incidence is plotted and formulae for finding the experimental geometry for any reciprocal node are given.

XVis: an educational open-source program for demonstration of reciprocal-space construction and diffraction principles

A program for visual demonstration of reciprocal-space building for crystals and the principles of X-ray (electron, neutron) diffraction on bulk and two-layered crystals is presented.