Structure and transport properties of liquids with square-well potential

Making use of the mean spherical model approximation, an analytical expression of the static structure factor S(k) has been presented, treating the square-well potential as a perturbation on the hard sphere system. This expression for S(k) incorporates the correct equation of state given by N F Carnahan and K E Starling (CS) (1969). The expressions for the transport coefficients, for the square-well system are also modified with the CS equation of state. The calculated values of transport coefficients for liquid sodium at 373 K, are compared with the experimental data. In view of the reasonable values of potential parameters obtained from a fit with the experimental peak of S(k), the present calculation is found to be in better agreement with the experimental data. (author)