Structure of liquid Na-K alloys

X-ray and neutron diffraction data are presented for a number of liquid Na-K alloys covering the whole composition range. Additionally, for the composition 50 at.% Na-50 at.% K, a computer experiment in molecular dynamics has been carried out. An attempt is made to analyze the results in terms of three partial structure factors. To this aim several models for the liquid state, subject to the condition of compatibility with the two sets of diffraction data, are considered. The number density structure factor Ssub(NN)(q)has been determined rather accurately. For the 50% alloy the results are compared with those of the computer experiment. (orig.)