Liquid-liquid critical point: an analytical approach

A. Daanoun ()

The European Physical Journal B: Condensed Matter and Complex Systems, 2006, vol. 53, issue 1, 61-65

Abstract: Theoretical simulations and experimental studies have showed that many systems (like liquid metals) can exhibit two phase transitions: gas-liquid and liquid-liquid. Consequently the fluid phase of these systems presents two critical points, namely the usual gas-liquid (G-L) critical point and the liquid-liquid critical point that results from a phase transition between two liquids of different densities: a low density liquid (LDL) and a high density liquid (HDL). The van der Waals theory for simple fluids [Phys. Rev. E 50, 2913 (1994)] is based on taking a system with purely repulsive forces as a reference, is able to describe two stable first-order phase transitions between fluids of different densities. The particles in our system interact via a total pair potential, which splits into a repulsive V R and a density-dependent attractive V A part. Copyright EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2006

Keywords: 64.70.Ja Liquid-liquid transitions; 64.60.Kw Multicritical points; 64.60.-i General studies of phase transitions (search for similar items in EconPapers)
Date: 2006
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DOI: 10.1140/epjb/e2006-00344-1

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