Using integral equations which adopt the hypernetted-chain equation for the interionic correlation, the convolution approximation for the interelectronic correlation, and the density-functional scheme for the ion-electron correlation, we calculate the correlation functions of liquid alkali metals (Li,Na,K) near freezing. Through a comparison with the experimental results, it is shown that the present theory is in fairly good agreement with experiment.

• Received 23 August 1993

DOI:https://doi.org/10.1103/PhysRevB.49.6608