Abstract
In this paper we report the results of extensive numerical calculations on the equation of state of the square-well fluid in the immediate vicinity of its critical point, with the objective being the precise determination of the critical exponents and . These determinations were carried out using data generated by solving the Yvon-Born-Green equation for the pair distribution function (with superposition approximation) over an extended range of integration (∼50 intermolecular diameters). When taken together with the value of the critical exponent reported previously by the authors (), the results obtained, and , suggest strongly that the essential physics of the gas-liquid transition in the neighborhood of the critical point is described correctly by an integral equation derived from the classical Bogoliubov-Born-Green-Kirkwood-Yvon theory of distribution functions.
- Received 23 July 1979
DOI:https://doi.org/10.1103/PhysRevA.21.356
©1980 American Physical Society