Criticality of ionic fields: The Ginzburg criterion for the restricted primitive model
- 30 October 1995
- journal article
- Published by IOP Publishing in Journal of Physics: Condensed Matter
- Vol. 7 (44) , L575-L583
- https://doi.org/10.1088/0953-8984/7/44/001
Abstract
A Ginzburg criterion is employed to estimate the extent of the critical region for the restricted primitive model (RPM) of an ionic fluid. Mean-field critical amplitudes are calculated using the generalized mean-spherical approximation (GMSA) and other recently proposed theories. The resulting (reduced) Ginzburg temperature tG is large and similar to that calculated for models of a one-component neutral fluid. This implies that crossover from mean-field to Ising-like critical exponents should not be expected for the RPM. The relevance of these results for the criticality of real ionic fluids is discussed.Keywords
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