# An interpretation of the mean spherical approximation

- Authors
- Journal
- Physics Letters A 0375-9601
- Publisher
- Elsevier
- Publication Date
- Volume
- 53
- Issue
- 5
- Identifiers
- DOI: 10.1016/0375-9601(75)90027-4

## Abstract

Abstract The mean spherical approximation is shown to be derivable from a perturbation expansion where the reference system follows the Percur-Yevick approximation. Then the MSA may be interpreted as a first-order expansion in which the perturbation is averaged with respect to the low-density reference distribution function. This represents a generalization of an equivalent interpretation previously made with respect to the free energy of a polar fluid.

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