Microscopic structure of the alkali metal-alkali halide solutions in the metallic regime. A neutron-scattering investigation

The partial structure factors have been measured for two compositions (x = 0.8; x = 0.6) in the metallic regime of the solutions Kx(KCl)1-x. The potassium-potassium partials are compared with the pure potassium structure factor measured at 7000C. Ionic-like characteristics are obtained for the partials, even for x = 0.8. The number of potassium atoms surrounding chlorine is about four, suggesting rather open structures. Details are given on the data analysis of this difficult experiment. (author)