SOLUTION OF THE ORNSTEIN-ZERNIKE EQUATION FOR A SOFT-CORE YUKAWA FLUID

A model for simple fluids is proposed in which the radial distribution function has a parametric form appropriate to a soft-core fluid for interparticle separation r ≤ R, where R is some range parameter. For r > R, the direct correlation function is assumed to be of Yukawa form. The Ornstein-Zernike equation is solved for this system, yielding the radial distribution and the total correlation function for the entire range of interparticle separation. Methods of relating the model fluid to a real fluid by assigning values to the parameters are discussed. © 1979 Plenum Publishing Corporation.