Düsseldorf 2007 – scientific programme

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P: Fachverband Plasmaphysik

P 5: Dichte Plasmen

P 5.2: Talk

Monday, March 19, 2007, 15:00–15:15, 6C

Optical conductivity and reflectivity in warm dense matter — •Bastian Holst, Andre Kietzmann, and Ronald Redmer — Institut für Physik, Universität Rostock, 18051 Rostock

The reflectivity of warm dense matter is an important measure to probe the equation of state (EOS) of materials at high pressure. Data obtained within dynamical experiments are a crucial test for thermodynamic and optical properties. We calculate the EOS of hydrogen and noble gases performing quantum molecular dynamics simulations to study the nonmetal-to-metal transition at high pressures. New results for the EOS and the Hugoniot curve are presented. The optical conductivity and reflectivity is obtained evaluating the Kubo-Greenwood-formula. We compare with experiments and other theoretical approaches, especially with chemical models as, e.g., the fluid variational theory. This project is supported by the SFB 652 "Strong correlations and collective effects in radiation fields".