Equation of state of dense plasma mixtures: application to the Sun center

Abstract

We present a self-consistent approach to the modeling of dense plasma mixtures in local thermodynamic equilibrium. In each electron configuration the nucleus is totally screened by electrons in a Wigner-Seitz sphere (ion-sphere model). Bound and free electrons are treated quantum-mechanically. The assumption that all species should have the same electronic environment leads to the equality of the electronic pressure for all ions of all elements having therefore different cell volumes. The variation of the average atomic radii of the different elements with respect to temperature is investigated, and the procedure is applied to the determination of pressure in the Sun center.

submitted to "Contributions to Plasma Physics"

References in corpus (4)

• Thermodynamic functions of dense plasmas: analytic approximations for astrophysical applications
• Resistivity in warm dense plasmas beyond the average-atom model
• Quantum Langevin molecular dynamics determination of the solar-interior equation of state
• Quantum-statistical equation-of-state models of dense plasmas: high-pressure Hugoniot shock adiabats