Monte Carlo simulation and integral-equation studies of a fluid of charged hard spheres near the critical region

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Abstract
A detailed Monte Carlo and integral-equation study of the behavior of the restricted primitive model of electrolytes near the critical region is presented. Our simulation results furnish information concerning cluster formation in the low density–high ionic strength region. Additionally, bridge functions have been extracted from the simulated pair correlation functions by means of an iterative procedure. These ‘‘exact’’ bridge functions have been compared with the results of a recently proposed integral equation [D. M. Duh and A. D.-J. Haymet, J. Chem. Phys. 97, 7716 (1992)], which has been solved using both a Coulombic and an optimized decomposition of the interionic potential.