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Perturbation theory for square-well plus sutherland (∞, 6) fluid

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  • Boghdadi, M.

Abstract

The perturbation approach to the theory of fluids, originally introduced by Zwanzig, is applied to the square-well plus Sutherland (∞, 6) fluid. It is shown that the virial coefficients up to the fourth are in close agreement with those for the LJ (12-6) with a hard-sphere cutoff when the bowl width of the square well used is chosen to be equal to 0.25 σ where σ is the hard-sphere diameter. Also, for this suitable choice of the bowl width, the first and the second-order corrections to the free energy have been found to agree reasonably well with those for the square-well fluid of Barker and Henderson.

Suggested Citation

  • Boghdadi, M., 1976. "Perturbation theory for square-well plus sutherland (∞, 6) fluid," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 85(1), pages 193-201.
    • Handle: RePEc:eee:phsmap:v:85:y:1976:i:1:p:193-201
    DOI: 10.1016/0378-4371(76)90128-X
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