Properties of fluid deuterium under double-shock compression to several Mbar

Boehly, T. R.; Hicks, D. G.; Celliers, P. M.; Collins, T. J. B.; Earley, Robert; Eggert, J. H.; Jacobs‐Perkins, D.; Moon, S. J.; Vianello, E.; Meyerhofer, D. D.; Collins, G. W.

doi:10.1063/1.1778164

Cited by 58 publications

(48 citation statements)

References 37 publications

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“…In those experiments, temperature was not measured but later experiments using reflectivity and emissivity, to infer the temperature (Bailey et al, 2008) are shown in figure 13, and found to be in good agreement with previous data. Also, second-shock data up to 900 GPa has been measured with laser-driven shocks at OMEGA laser in Rochester (Boehly et al, 2004). These data are consistent with a stiff EOS with 4.3 to 4.4-fold maximum compression along the principal Hugoniot.…”

Section: Fig 11 (Color Online)supporting

confidence: 63%

The properties of hydrogen and helium under extreme conditions

McMahon¹,

Morales²,

Pierleoni³

et al. 2012

Rev. Mod. Phys.

478

415

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Hydrogen and helium are the most abundant elements in the universe and, in principle, are the simplest elements. Nonetheless, they display remarkable properties under pressure that have fascinated theoreticians and experimentalists for over a century. Recent advances in computational methods have made it possible to elucidate many of these properties. We review some of the computational methods that have been applied to dense hydrogen and helium in recent years, mainly those that perform a simulation directly from the physical picture of electrons and ions; primarily, those based on density functional theory and quantum Monte Carlo methods. We then discuss the predictions from such methods as applied to the phase diagram of hydrogen, including the solid and fluid phases, with particular focus on the crystal structures, the liquidliquid transition and comparison of the results with experimental shock-wave data. We then discuss predictions of ordered quantum states, including a possible low-temperature fluid and high-temperature superconductivity in the atomic state. We also briefly discuss pure helium, and then focus on hydrogen-helium mixtures, with particular focus on properties of relevance to planetary science.

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Section: Fig 11 (Color Online)supporting

confidence: 63%

The properties of hydrogen and helium under extreme conditions

McMahon¹,

Morales²,

Pierleoni³

et al. 2012

Rev. Mod. Phys.

478

415

View full text Add to dashboard Cite

show abstract

“…For this reason, most of the recent experimental measurements by shock compression have focused on the heavier isotope [11][12][13][14][15][16] . However, it should be noted that the Hugoniots for the two isotopes do not scale in density.…”

Section: Introductionmentioning

confidence: 99%

Laser-shock compression and Hugoniot measurements of liquid hydrogen to 55 GPa

et al. 2011

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The principal Hugoniot for liquid hydrogen was obtained up to 55 GPa under laser-driven shock loading. Pressure and density of compressed hydrogen were determined by impedance-matching to a quartz standard. The shock temperature was independently measured from the brightness of the shock front. Hugoniot data of hydrogen provide a good benchmark to modern theories of condensed matter. The initial number density of liquid hydrogen is lower than that for liquid deuterium, and this results in shock compressed hydrogen having a higher compression and higher temperature than deuterium at the same shock pressure.

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“…Experimentally, The EOS of hydrogen and helium in the fluid regime have been studied through gas gun [38], chemical explosive [39], magnetic driven plate flyer [40], and high power laser [41][42][43]. Since these experiments were limited by the conservation of mass, momentum, and energy, the explored density of warm dense matter were limited within 5 ∼ 6 times of the initial density.…”

Section: A the Equation Of Statementioning

confidence: 99%

Thermophysical properties of hydrogen-helium mixtures: Re-examination of the mixing rules via quantum molecular dynamics simulations

Zhang

2013

Phys. Rev. E

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Thermophysical properties of hydrogen, helium, and hydrogen-helium mixtures have been investigated in the warm dense matter regime at electron number densities ranging from 6.02 × 10 29 ∼ 2.41 × 10 30 /m 3 and temperatures from 4000 to 20000 K via quantum molecular dynamics simulations. We focus on the dynamical properties such as the equation of states, diffusion coefficients, and viscosity. Mixing rules (density matching, pressure matching, and binary ionic mixing rules) have been validated by checking composite properties of pure species against that of the fully interacting mixture derived from QMD simulations. These mixing rules reproduce pressures within 10% accuracy, while it is 75 % and 50 % for the diffusion and viscosity, respectively. Binary ionic mixing rule moves the results into better agreement. Predictions from one component plasma model are also provided and discussed.

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Properties of fluid deuterium under double-shock compression to several Mbar

Cited by 58 publications

References 37 publications

The properties of hydrogen and helium under extreme conditions

The properties of hydrogen and helium under extreme conditions

Laser-shock compression and Hugoniot measurements of liquid hydrogen to 55 GPa

Thermophysical properties of hydrogen-helium mixtures: Re-examination of the mixing rules via quantum molecular dynamics simulations

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