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Helmholtz free energy; equation of state; internal energy; internal heat capacity; quantum effects

Analytic expressions for the thermodynamic properties of a classical two-dimensional square-well fluid and the first quantum correction to them are derived using the Barker-Henderson perturbation theory. Numerical results are reported. It is found that the quantum effect, which increases with increase of density, is largely determined by the hard-core and the attractive tail has a minor effect at high density.

B M Mishra^{1 2} S K Sinha¹

1. Department of Physics, L. S. College, Bihar University, Muzaffarpur - 842 001, India
2. Department of Physics, C.M. (Science) College, Darbhanga - 846 004, India

Published

July 1984

Manuscript received

30 September 1983

Manuscript revised

26 March 1984