E M Apfelbaum

Joint Institute for High Temperatures of Russian Academy of Science

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The Journal of chemical physics (1)

8,306,749

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The confirmation of the critical point-Zeno-line similarity set from the numerical modeling data for different interatomic potentials.

(2009)

Journal - The Journal of chemical physics (United States )

Abstract :

We use numerical simulation data for several model interatomic potentials to confirm the critical point-Zeno-line relations of similarity (CZS) for the liquid branch of the coexistence curve suggested earlier [E. M. Apfelbaum and V. S. Vorob'ev, J. Phys. Chem. B 112, 13064 (2008)]. These relations have been based on the analysis of experimental values for the critical point parameters and liquid-gas coexistence curves for a large number of real substances and two model systems. We show that the numerical modeling data as a whole confirm the CZS in the domain of the existence of liquid state. The deviations from CZS relations take place for two cases: (a) the numerically calculated coexistence curve gets into domain corresponding to solidification; (b) the liquid-vapor transition becomes metastable with respect to freezing.

ISSN :	1089-7690