Berlin 2005 – wissenschaftliches Programm

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P: Plasmaphysik

P 25: Dichte Plasmen 2

P 25.2: Vortrag

Mittwoch, 9. März 2005, 11:30–11:45, HU 3059

Equation of state for dense noble gases and hydrogen — •Volker Schwarz, Hauke Juranek, Nadine Nettelmann, and Ronald Redmer — Institut für Physik, Universität Rostock, 18051 Rostock

The knowledge of the equation of state of hydrogen and hydrogen-helium mixtures is important for modeling, e.g., planetary interiors. For this, accurate equation of state data is required for high pressures up to several megabars and temperatures of several thousand Kelvin known as warm dense matter. We calculate the equation of state for hydrogen and noble gases (He, Ar, Xe) within Fluid Variational Theory considering dissociation processes self-consistently and ionization in addition. Effective pair potentials are used to describe the interactions between the species. We present results for the equation of state for the materials mentioned above and compare with available simulations and shock-wave experiments. Especially, the Hugoniot curves are discussed. The results for hydrogen-helium mixtures are used to model interiors of giant planets such as Jupiter.