Bremen 2017 – wissenschaftliches Programm

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P: Fachverband Plasmaphysik

P 10: Theory and Modeling I

P 10.5: Vortrag

Dienstag, 14. März 2017, 15:15–15:30, HS 2010

Electrical conductivity of partially ionized noble gases — •Sebastian Rosmej, Heidi Reinholz, and Gerd Röpke — Universität Rostock, Institut für Physik, 18051 Rostock, Deutschland

The conductivity of partially ionized noble gases is considered within the Linear Response Theory in a chemical picture. The different scattering mechanisms (electron-ion, electron-electron and electron-atom) contribute to the electrical resistivity. Correlation functions are evaluated including strong collisions via the T matrix approximation for different densities and temperatures. Especially the influence of electron-electron and electron-atom collisions is presented. The interaction between free electrons and atoms for isolated systems is modeled by an optical potential, screening effects caused by the plasma environment are included. The low-density Spitzer limit as well as the Ziman limit for high degeneracy are reproduced. Further analytical limits are given. Our theoretical results are compared with MD simulations and experiments.