1983
DOI: 10.1063/1.445938
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Equation-of-state data for molecular hydrogen and deuterium at shock pressures in the range 2–76 GPa (20–760 kbar)a)

Abstract: Dynamic equation-of-state data for D2 and H2 were measured in the pressure range 2–76 GPa (20–760 kbar) using a two-state light-gas gun. Liquid specimens were shocked from initial states near the saturation curve at 20 K. Maximum compression was sixfold over initial liquid density at a calculated temperature of 7000 K for D2. The data is discussed in terms of the theory of Ross et al., which includes an effective intermolecular pair potential, molecular vibration, free molecular rotation, and molecular dissoci… Show more

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Cited by 240 publications
(138 citation statements)
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“…However, theoretical and computational methods used to predict properties of warm dense matter [high temperatures (T), high pressures (P), and under rapidly changing conditions] have serious shortcomings leading to considerable uncertainties due to high degrees of electronic excitation, structural and electronic heterogeneity, and complex transient dynamics. This contrasts with the situation at room temperature (RT), where a wealth of structural and energetic data on compressed phases is available via experiments in diamond anvil cells and gas guns (3)(4)(5), and from theoretical studies such as density functional theory (DFT).…”
mentioning
confidence: 84%
“…However, theoretical and computational methods used to predict properties of warm dense matter [high temperatures (T), high pressures (P), and under rapidly changing conditions] have serious shortcomings leading to considerable uncertainties due to high degrees of electronic excitation, structural and electronic heterogeneity, and complex transient dynamics. This contrasts with the situation at room temperature (RT), where a wealth of structural and energetic data on compressed phases is available via experiments in diamond anvil cells and gas guns (3)(4)(5), and from theoretical studies such as density functional theory (DFT).…”
mentioning
confidence: 84%
“…Although this conductivity does not conform to metallic values, this experiment demonstrates that the electrical conductivity increases at high pressure and temperature. Shock Hugoniot and temperature data have also been measured [18][19][20].…”
Section: Introductionmentioning
confidence: 99%
“…Now let us compare this datum with the predictions of the new model proposed earlier (4), and calculations based on previous experiments. The experiments reported by Nellis, et al (1) in shocked H 2 and D 2 allow us to calculate an approximate Grüneisen parameter, since we can determine Eq. (3), and thus sound velocity (Eq.…”
Section: Time Positionmentioning
confidence: 99%
“…The equation of state (EOS) along the principal Hugoniot was determined by Nellis, et al (1), and theoretical models were developed subsequently. (2,3) Recently, new shock temperature measurements led to the development of a new model, in which the effective molecular dissociation energy decreases with decreasing volume.…”
Section: Introductionmentioning
confidence: 99%
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