Thermodynamic Properties of Dense Hydrogen

Abstract

The equation of state of hydrogen is determined theoretically in the limits of the fully ionized plasma and the neutral reacting gas mixture. Analytical results are presented for the fully ionized state and compared to data from quantum simulations. The dense hydrogen gas is dealt with using Reaction Ensemble Monte Carlo and hypernetted chain techniques. The results are compared to other theoretical methods and to experimental findings. Finally, Reaction Ensemble Monte Carlo data are combined with Path Integral Monte Carlo results to give a Hugoniot curve covering the entire pressure range.