The long-wavelength limit of the Bhatia – Thornton structure factor "concentration – concentration" in liquid Na-K

Abstract

The concentration dependency of the Bhatia-Thornton structure factor "concentration -concentration" in the long-wavelength limit for the liquid system Na-K is calculated by using the variational method in conjunction with the pseudopotential one. Our results confirm smoothness of the dependency under consideration obtained experimentally by Caffasso et al. (1967) and by Alblas et al. (1980), although numerically our results lie closely to experiment of Hultgren et al. (1973).