Density fluctuations in molten salts. I. Inelastic neutron scattering from liquid RbBr

The density fluctuations in molten salts are being investigated with a combination of neutron-scattering and computer-simulation techniques. In this paper results are given for measurements of the coherent inelastic neutron scattering from molten RbBr at 986 K, in the wave-vector range 1Q7 ^-1. In view of the similarity between the Rb⁺ and Br^- ions with regard to size, mass, and neutron scattering length, the scattering function measured in these experiments closely reflects the behavior of the number density fluctuations in the melt, regardless of ion type.