High-energy Laue method - Importance and significance of spectometric analysis of diffracted beams

A detection set-up allowing the energy analysis of the diffracted beam has been implemented on the hard X ray apparatus installed at the institut Laue Langevin. First a short description of the set-up, of its characteristics and of its resolution will be given. Then. examples of improvements, related to the energy analysis, for Laue diagramm indexation, for successive diffraction order separation, for superstructure reflection studies and lattice parameter measurements will be shown. New investigation fields opened by the energy analysis of the diffracted beam will be illustrated by examples taken from several materials.