Semiempirical calculations of the zero-degree-Kelvin isotherm in metals

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Abstract
A phenomenological model has been devised for calculating the cold compression curves of metals up to the 10-TPa pressure region. The nuclear Grüneisen coefficient can also be correctly computed using this model. Shock Hugoniot curves were calculated for several metals using these cold compression curves to which the ion and electron thermal contributions were added. The results gave excellent agreement with experimental results for Pb, W, and Cd when the electron thermal portion is computed according to the Thomas-Fermi-Khirzhnits model. For Al, Cu, Fe, and Mo other electron thermal models must be used to give agreement with experimental results.