Abstract
A method of solution of the mean spherical approximation (MSA) is given for systems of hard spheres whose interaction potential is of the form outside the hard core. The method thus allows solution of the MSA for a wide range of potentials. Details are given for the cases and +φ2 exp (−μ2 r). The method is also used to study the MSA for systems in which the interparticle potential is of the form The difficulties of an exact solution for such systems are pointed out and an approximate method of solution developed. The limit μ →0 is considered. Details are given for the case