NEUTRON: a program for computing phonon extinction rules of inelastic neutron scattering and thermal diffuse scattering experiments

Abstract

NEUTRONis a computer program for calculating the phonon extinction rules for inelastic neutron scattering experiments. Given the space group and the phonon symmetry specified by the wavevector, the program examines the inelastic neutron scattering activity of the corresponding phonons for all possible types of scattering vectors. The systematic selection rules are also useful in the interpretation of the results of thermal diffuse scattering.NEUTRONforms part of the Bilbao Crystallographic server (http://www.cryst.ehu.es) and can be usedviathe Internet from any computer with a Web browser.