The high pressure equation of state for carbon is constructed by some simple physical models.For solid state,a multiphase equation of state is considered,which includes four solid states.For liquid state,the liquid pe...The high pressure equation of state for carbon is constructed by some simple physical models.For solid state,a multiphase equation of state is considered,which includes four solid states.For liquid state,the liquid perturbation theory of CRIS model is used.In the high temperature,the electronic contribution is obtained by the ionization equilibrium theory.The result of our calculation based on the above models is compared with the first principle density functional calculation and the other models.The Hugoniot and the phase diagram of carbon are also compared with the experiments.The results are satisfactory.展开更多
文摘The high pressure equation of state for carbon is constructed by some simple physical models.For solid state,a multiphase equation of state is considered,which includes four solid states.For liquid state,the liquid perturbation theory of CRIS model is used.In the high temperature,the electronic contribution is obtained by the ionization equilibrium theory.The result of our calculation based on the above models is compared with the first principle density functional calculation and the other models.The Hugoniot and the phase diagram of carbon are also compared with the experiments.The results are satisfactory.
