PARTIAL STRUCTURAL FUNCTIONS OF MOLTEN CUBR ESTIMATED FROM THE ANOMALOUS X-RAY-SCATTERING MEASUREMENTS

The individual partial structural functions of molten CuBr have been e stimated from the anomalous X-ray scattering (AXS) measurements. This data processing includes the help of the reverse Monte Carlo (RMC) sim ulation technique. The cation-cation structure factor of a(CuCu)(Q) wa s found to be rather structureless and the closest Cu-Cu distance in m olten CuBr was significantly smaller than that for Br-Br, indicating t he like-ion penetration into the first unlike-ion coordination shell; similar to the molten CuCl case. It is then suggested that a disordere d close packing of Br- ions where Cu+ ions meander so as to take stron gly disordered distribution by penetrating through the tetrahedral hol es.