Thermodynamic properties of hydrogen at pressures up to 1 Mbar and temperatures between 100 and 1000K

Abstract

Using data available from literature for hydrogen in the liquid and solid phases the authors constructed a consistent equation of state valid over a large part of the operating range of the diamond anvil cell. A large part of the experimental data is reproduced within 0.1% and practically all data within 0.5%. From this equation of state they derived the thermodynamic properties of molecular hydrogen. The volume, entropy, Gibbs free energy and enthalpy are tabulated as a function of temperature and pressure for P<or=1 Mbar and 100K<or=T<or=1000K.