Radial Distributions of Ions for a Primitive Model of an Electrolyte Solution

Radial distribution functions are computed for the primitive model of an electrolytic solution using the Percus—Yevick and convolution-hypernetted-chain integral equations. The results are compared with the Debye—Hückel theory. The Debye—Hückel approximation appears to be particularly bad when the density is great enough that the hard core plays a significant role in determining the radial distribution functions.