Hannover 2010 – wissenschaftliches Programm

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P: Fachverband Plasmaphysik

P 2: Diagnostics

P 2.10: Vortrag

Montag, 8. März 2010, 16:45–17:00, B 305

In-medium modification of K-line emission profiles of warm dense matter — •Andrea Sengebusch, Heidi Reinholz, and Gerd Röpke — Universität Rostock - Institut für Physik, Rostock (Germany)

X-ray emissions in the keV energy range have shown to be suitable radiation to investigate the properties of laser-created solid-density plasmas [1,2]. A theoretical treatment of spectral line profiles based on a self-consistent ion sphere model is applied on moderately ionized mid-Z materials. We focus here on the influence of plasma polarization effects on the K-line emission energy and satellite transitions due to M-shell ionization and excitation. Titanium and chlorine Kα and Kβ spectra were calculated in order to analyze recent measurements with respect to the plasma parameters of electron heated target regions. Radial temperature profiles as well the composition of the created warm dense matter are inferred [3,4].

[1] U. Zastrau, P. Aubert, V. Bernshtam, et al., submitted to PRL (2009).

[2] E. Stambulchik, V. Bernshtam, L. Weingarten, et al., J. Phys. A: Math. Theor. 42 214056 (2009).

[3] A. Sengebusch, H. Reinholz, G. Röpke, U. Zastrau, et al., J. Phys. A: Math. Theor. 42 214061 (2009).

[4] A. Sengebusch, H. Reinholz, G. Röpke, Contrib. Plasma Phys. 49 748 (2009).

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