Düsseldorf 2007 – wissenschaftliches Programm

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P: Fachverband Plasmaphysik

P 16: Poster

P 16.7: Poster

Mittwoch, 21. März 2007, 16:30–18:30, Poster A

Spectral line shapes in dense plasmas — •Banaz Omar¹, August Wierling¹, Sibylle Günter², and Gerd Poeke¹ — ¹Unversity of Rostock, Institute of Physics, Rostock, Germany — ²Max-Planck-Institut für Plasmaphysik, Garching, Germany

Based on a quantum statistical many-particle approach, the spectral line shapes are presented for helium and hydrogen in dense plasmas. The contribution of the ions is taken into account in a quasi-static approximation. The electronic contribution to the shift and width is considered, using the method of thermodynamic Green's function. Dynamical screening of the electron-atom interaction is included. Compared to the width, the electronic shift is more affected by dynamical screening. This effect increases at high density. Our results are compared with a large number of available theoretical and experimental data. Furthermore, self-absorption is considered in order to reproduced synthetic profiles.