The determination of the partial pair distribution functions for molten strontium chloride

The partial pair distribution functions for molten SrCl₂ have been measured using the technique of thermal neutron scattering from isotopically enriched samples. Various possible methods for separation of the partial structure factors from the neutron scattering cross sections are discussed and a new algorithm is suggested. The radial distribution functions have been compared with the simulations of de Leeuw (1978) and Dixon (1976-1979). The significant level of disagreement indicates that a new interionic potential is necessary. Comparison has also been made with molten BaCl₂, CaCl₂ and ZnCl₂. It appears that the structural trends cannot be entirely explained in terms of cation size.