Addendum to ``Equation of state of classical Coulomb plasma mixtures''
Abstract
Recently developed analytic approximation for the equation of state of fully ionized nonideal electron-ion plasma mixtures [A. Y. Potekhin, G. Chabrier, and F. J. Rogers, Phys. Rev. E 79, 016411 (2009)], which covers the transition between the weak and strong Coulomb coupling regimes and reproduces numerical results obtained in the hypernetted-chain (HNC) approximation, is modified in order to fit the small deviations from the linear mixing in the strong-coupling regime, revealed by recent Monte Carlo simulations. In addition, a mixing rule is proposed for the regime of weak coupling, which generalizes post-Debye density corrections to the case of mixtures and numerically agrees with the HNC approximation in that regime.
- Publication:
-
Physical Review E
- Pub Date:
- October 2009
- DOI:
- 10.1103/PhysRevE.80.047401
- arXiv:
- arXiv:0909.3990
- Bibcode:
- 2009PhRvE..80d7401P
- Keywords:
-
- 52.25.Kn;
- 05.70.Ce;
- 52.27.Gr;
- Thermodynamics of plasmas;
- Thermodynamic functions and equations of state;
- Strongly-coupled plasmas;
- Physics - Plasma Physics;
- Astrophysics - Solar and Stellar Astrophysics
- E-Print:
- 4 pages, 4 figures, accepted for publication in Phys. Rev. E