Gas-liquid critical point in model ionic fluids with charge and size asymmetry

We study the effects of size and charge asymmetry on the gas-liquid critical parameters of a primitive model (PM) of ionic fluids. The model is characterized by the two parameters: hard-sphere diameter-, X = s(+)/s(-) and charge, z = q+/|q(-)|, ratios of the two ionic species. Using the collective v...

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Bibliographic Details
Main Authors: Patsahan, O V, Patsahan, T M
Format: Conference Proceeding
Language:English
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Summary:We study the effects of size and charge asymmetry on the gas-liquid critical parameters of a primitive model (PM) of ionic fluids. The model is characterized by the two parameters: hard-sphere diameter-, X = s(+)/s(-) and charge, z = q+/|q(-)|, ratios of the two ionic species. Using the collective variables based theory we calculate the critical temperature and the critical density for the two versions of PM: an equisize PM with charge asymmetry (X = 1, z C 1) and a monovalent PM with size asymmetry (l C 1, z = 1). The trends obtained for the both critical parameters of the models under consideration agree qualitatively with Monte Carlo simulation findings.
ISSN:0094-243X
DOI:10.1063/1.3284407