Kiel 2011 – wissenschaftliches Programm

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P: Fachverband Plasmaphysik

P 18: Poster: Theorie/Simulation dichter und stark gekoppelter Plasmen

P 18.26: Poster

Mittwoch, 30. März 2011, 16:30–18:30, Foyer

Plasma diagnostics applying K-line emission profiles of mid-Z materials — Kristine Karstens, •Yiling Chen, and Andrea Sengebusch — Universität Rostock, Institut für Physik, Rostock

In recent years K-line spectra have become the focus of various experiments. Narrow K-line emission of some keV is an appropriate light scource for Thomson scattering on warm dense matter with solid and even over-solid electron density. Moreover, as the K-spectra are often emitted from a warm dense plasma themselves one can infer plasma parameters, i.e. temperature, density and composition, by studying the line profiles [1,2]. Theoretical treatment of spectral line profiles using a self-consistent ion sphere model is applied on moderately ionized mid-Z materials. A consistent extension of the Planck-Larkin renormalization to these elements is shown. In this poster we focus on the influence of plasma polarization effects on the K-line emission energy and satellite transitions due to M-shell ionization and excitation. It is shown that important contributions to the line profiles are due to excited radiator states [3].

[1] U. Zastrau, A. Sengebusch, and et al., HEDP (submitted 2010). [2] A. Sengebusch, H. Reinholz, and G. Röpke, Contrib. Plasma Phys. 49, 748 (2009). [3] A. Sengebusch, H. Reinholz, and et al., J. Phys. A: Math. Gen. 42, 214061 (2009).