Equation of State Measurements of Hydrogen and Deuterium up to 2 Mbar

Details Equation of State Measurements of Hydrogen and Deuterium up to 2 Mbar Equation of State Measurements of Hydrogen and Deuterium up to 2 Mbar

Jul 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aps..shk..c301c&link_type=abstract

American Physical Society, Shock Compression Meeting, July 27 - August 1, 1997, abstract #C3.01

Astronomy and Astrophysics

Astrophysics

Scientific paper

The high density and temperature equation of state of hydrogen is integral to many astrophysical and planetary models. We (This work was done in collaboration with L. B. DaSilva, P. Celliers, K. S. Budil, R. Cauble, D. Gold, N. C. Holmes, T. W. Barbee Jr, B. A. Hammel, J. D. Kilkenny, R. J. Wallace, R. Stewart, M. Ross, A. Ng and G. Chiu.) have used the Nova laser to produce uniform and steady shocks in H2 and D2 to probe this strongly-coupled region where molecular dissociation and electronic excitation occur. We present the pressure (from 0.25 to 2.1 Mbar) and density on the first Hugoniot, derived from shock speed, particle speed, and compression measurements of liquid H2 and D2. The data show a significant increase in compressibility near 1 Mbar compared to existing widely-used equation of state models.

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