Improved equation of state for the classical one-component plasma

作者：Wayne L. Slattery, G. D. Doolen, Hugh E. DeWitt · 发表于：Physical Review A · 年份：1980 · DOI：10.1103/physreva.21.2087 · 被引用次数：586 · 研究领域：Atomic and Molecular Physics、Advanced Chemical Physics Studies、High-pressure geophysics and materials

We compute the internal energy of the classical one-component plasma, for values of the Coulomb coupling parameter $\ensuremath{\Gamma}$ between 1 and 300, by using converged Monte Carlo chains and a more accurate potential approximation than that used by Hansen. The liquid data are fitted to a simple, very accurate four-parameter formula from which the Helmholtz free energy is derived. The solid data are likewise fitted to a one-parameter formula. The intersection of the two free-energy curves gives an estimate of the fluid-solid transition at $\ensuremath{\Gamma}=168\ifmmode\pm\else\textpm\fi{}4$.