Addendum to "Equation of state of classical Coulomb plasma mixtures"

Details Addendum to "Equation of state of classical Coulomb plasma mixtures" Addendum to "Equation of state of classical Coulomb plasma mixtures"

2009-09-22

arxiv.org/abs/0909.3990v1

Phys. Rev. E 80 (2009) 047401

Physics

Plasma Physics

4 pages, 4 figures, accepted for publication in Phys. Rev. E

Scientific paper

10.1103/PhysRevE.80.047401

Recently developed analytic approximation for the equation of state of fully ionized nonideal electron-ion plasma mixtures [Potekhin et al., Phys. Rev. E, 79, 016411 (2009); arXiv:0812.4344], 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.

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