Equation of state for electron-electron interaction energy by Padé approximation
Describing the electron-electron interaction contribution to the Helrnholtz free energy, we obtained a new fitting formula by revising the electronic exchange contribution to the Helmholtz free energy of the previous fitting formula.Using Fortran program, we calculated the curves with some sensitive parameters like the electron-electron interaction contribution to the free energy fee and the Coulomb coupling parameter Γe, temperature logT, the mean distance between the electrons rs making a comparison between the revised fitting formula and the formers.It is concluded that the theoretical value of the revised fitting formula basically has agreement with the previous theoretical value at rs =0.05, when rs =0.10~0.13, the revised value completely has a consistent with the previous results.It is illustrated that the curve of the revised fitting formula is more smooth, perfect, and we obtained a very good agreement between the theoretical result of the revised Helmholtz free energy and the theoretical result of the former Padé formulas, which illustrates us to get a more accurate fitting formula and result.Therefore, the revised fitting formula is a more complete and accurate description of the thermodynamic properties of the electron-electron interaction contribution to the Helmholtz free energy.
Pade formula hydrogen plasma electron-electron interaction contribution to the Helmholtz free energy revising
XingRong Zheng ChunLing Tian Jiao Yang Yun Fu
School of Southwest University,Chongqing,400715,Peoples Republic of China
国际会议
2012 China Functional Materials Technology and Industry Forum(2012中国功能材料科技与产业高层论坛)(CFMTIF2012)
昆明
英文
701-706
2012-11-09（万方平台首次上网日期，不代表论文的发表时间）