Düsseldorf 2007 – wissenschaftliches Programm

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P: Fachverband Plasmaphysik

P 6: Grundlegende Probleme, Theorie

P 6.2: Vortrag

Montag, 19. März 2007, 15:00–15:15, 6F

Effective potentials and structure factors for partially ionized plasmas — •Wolf Dietrich Kraeft, Thomas Bornath, Volker Schwarz, and Ronald Redmer — Institut für Physik der Universität Rostock, D

Structure factors are needed in diagnostics for the interpretation of light and X-ray scattering plasma experiments. They can be determined via integral equations such as HNC schemes. Effective potentials are applied in order to extend the range of applicability to cover dense quantum plasmas.

Starting from the two-particle Slater sum, the Kelbg potential follows in first Born approximation. Here, we study the contribution of the second Born approximation. Comparison with other approaches to effective potentials, such as given by Gombert, PRE 66, 066407(2002) and by Filinov et al., PRE 70, 046411(2004), is performed. Finally, results for radial distribution functions and static structure factors are presented in an HNC scheme for a partially ionized plasma.