Kiel 2011 – wissenschaftliches Programm

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P: Fachverband Plasmaphysik

P 10: Poster: Astro- und geophysikalische Plasmen, warme dichte Plasmen

P 10.3: Poster

Dienstag, 29. März 2011, 17:00–19:00, Foyer

Optical and electrical diagnostics for magnetized pulsed-power discharges — •Philipp Kempkes, Felix Mackel, Sascha Ridder, Holger Stein, Thomas Tacke, Jan Tenfelde, and Henning Soltwisch — Ruhr-Universität Bochum

A set of diagnostics with high temporal resolution for magnetized pulsed-power discharges at the FlareLab experiment has been developed. The experiment is designed to produce arc-shaped magnetic flux tubes which are widely used as a descriptive model for ascending arc-shaped solar protuberances. Typical values for the electron temperature and density of the produced plasmas are around 10²¹ m⁻³ and 5-10 eV, respectively. The occuring magnetic flux densities are around 100 mT, typical timescales for the discharge evolution are in the microsecond range. The diagnostics set consists of several electrostatic triple and double probes, electromagnetic Bdot probes and a CO₂ Laser interferometer. We present a comparative study, in which the diagnostics are benchmarked against each other, together with a detailed characterization of the experiment. A fast framing camera is used to correlate the output of different diagnostics with visible structures in the plasma emission.