Equations of state, transport properties, and compositions of argon plasma: combination of self-consistent fluid variation theory and linear response theory

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
W L QuanY J Gu

Abstract

A consistent theoretical model that can be applied in a wide range of densities and temperatures is necessary for understanding the variation of a material's properties during compression and heating. Taking argon as an example, we show that the combination of self-consistent fluid variational theory and linear response theory is a promising route for studying warm dense matter. Following this route, the compositions, equations of state, and transport properties of argon plasma are calculated in a wide range of densities (0.001-20 g/cm(3)) and temperatures (5-100 kK). The obtained equations of state and electrical conductivities are found in good agreement with available experimental data. The plasma phase transition of argon is observed at temperatures below 30 kK and density about 2-6g/cm(3). The minimum density for the metallization of argon is found to be about 5.8 g/cm(3), occurring at 30-40 kK. The effects of many-particle correlations and dynamic screening on the electrical conductivity are also discussed through the effective potentials.

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Citations

Oct 16, 2015·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Gennady Miloshevsky, Ahmed Hassanein
Nov 21, 2020·Physical Review. E·Y J GuQ F Chen

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