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Calculation of a deuterium double shock Hugoniot from ab initio simulations
B Militzer1, D M Ceperley, J D Kress
1Lawrence Livermore National Laboratory, University of California, Livermore, California 94550, USA.
Physical Review Letters
|January 22, 2002
Abstract:
We calculate the equation of state of dense deuterium with two ab initio simulation techniques, path integral Monte Carlo and density functional theory molecular dynamics, in the density range of 0.67 < or = rho < or = 1.60 g cm(-3). We derive the double shock Hugoniot and compare with the recent laser-driven double shock wave experiments by Mostovych et al. [Phys. Rev. Lett. 85, 3870 (2000)]. We find excellent agreement between the two types of microscopic simulations, but a significant discrepancy with the laser-driven shock measurements.