Directional Compton profiles of silver

The [100], [110], and [111] directional Compton profiles from Ag single crystals measured using ${}_{}{}^{198}{}_{}{}^{}\mathrm{Au}$ (412 keV) and ${}_{}{}^{137}{}_{}{}^{}\mathrm{Cs}$ (662 keV) sources, together with the corresponding theoretical profiles obtained within the charge self-consistent relativistic Korringa-Kohn-Rostoker band-structure methodology are presented. The overall amplitude and shape of the measured directional anisotropies are found to be in good accord with theoretical predictions based on the local-density approximation. In considering absolute Compton profiles, a substantial discrepancy between theory and experiment is found; however, this discrepancy is essentially removed by invoking an energy-independent correction to the data consistent with the presence of a significant bremsstrahlung background. The experimental and theoretical results are compared and contrasted with other relevant available data in the literature.