by statistical mechanics methods. The model is of substantial theoretical importance in
studies of systems with a varying potential range of interaction since it can represent three
limiting cases, namely, the hard-sphere, the short-range sticky-sphere, and the longrange
van der Waals fluids. The thermodynamic and structure properties of square-well fluids SWF
have been obtained using integral equations1–3 and perturbation theory. 4–6 In addition to …