A Model for Sub-critical Liquid-Vapour Coexistence in Sodium

S. M. Osman; W. H. Young

doi:10.1080/00319108708078555

A Model for Sub-critical Liquid-Vapour Coexistence in Sodium

S. M. Osman, W. H. Young

Physics

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

The Hamiltonian of the ions in liquid sodium is obtained from pseudopotential perturbation theory, and the free energy is evaluated using the Gibbs-Bogoliubov variational technique together with a hard sphere reference system. The free energy of the vapour is obtained by supposing it to be a monomer-dimer mixture. The two descriptions are then combined to provide a theory of coexistence. This yields satisfactory results for the various thermodynamic properties up to a few hundred degrees short of the critical temperature.

Original language	English
Pages (from-to)	181-194
Number of pages	14
Journal	Physics and Chemistry of Liquids
Volume	17
Issue number	3
DOIs	https://doi.org/10.1080/00319108708078555
Publication status	Published - Dec 1 1987

Keywords

dimers
hard spheres
Monomers
pseudopotential

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Physical and Theoretical Chemistry
Materials Chemistry

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10.1080/00319108708078555

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AB - The Hamiltonian of the ions in liquid sodium is obtained from pseudopotential perturbation theory, and the free energy is evaluated using the Gibbs-Bogoliubov variational technique together with a hard sphere reference system. The free energy of the vapour is obtained by supposing it to be a monomer-dimer mixture. The two descriptions are then combined to provide a theory of coexistence. This yields satisfactory results for the various thermodynamic properties up to a few hundred degrees short of the critical temperature.

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KW - Monomers

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A Model for Sub-critical Liquid-Vapour Coexistence in Sodium

Abstract

Keywords

ASJC Scopus subject areas

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