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The Equation of State and the Hugoniot of Laser Shock-Compressed Deuterium

M. W. C. Dharma-wardana·Francois Perrot
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Abstract

The equation of state and the shock Hugoniot of deuterium are calculated using a first-principles approach, for the conditions of the recent shock experiments. We use density functional theory within a classical mapping of the quantum fluids [ Phys. Rev. Letters, {\bf 84}, 959 (2000) ]. The calculated Hugoniot is close to the Path-Integral Monte Carlo (PIMC) result. We also consider the {\it quasi-equilibrium} two-temperature case where the Deuterons are hotter than the electrons; the resulting quasi-equilibrium Hugoniot mimics the laser-shock data. The increased compressibility arises from hot $D^+-e$ pairs occuring close to the zero of the electron chemical potential.

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M. W. C. Dharma-wardana, Francois Perrot. 2001-12-17. The Equation of State and the Hugoniot of Laser Shock-Compressed Deuterium. https://doi.org/10.1103/physrevb.66.014110

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