Hannover 2010 – wissenschaftliches Programm

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P: Fachverband Plasmaphysik

P 8: Poster: Low Temperature Plasmas I

P 8.18: Poster

Dienstag, 9. März 2010, 16:00–18:00, Lichthof

Energy Transfer Efficiency of a Spherical Theta-Pinch — •Christian Teske, Andreas Fedjuschenko, Joachim Jacoby, and Waldemar Schweizer — Institut für Angewandte Physik, Frankfurt am Main, Deutschland

A spherical theta-pinch device for VUV generation and plasma stripper applications with an operating frequency of 12 kHz has been developed. The setup consists of a series resonance circuit with a load capacitance of 27 myF and a large diameter induction coil surrounding a spherical discharge vessel with a discharge volume of 4000 ml. First measurements have been made to evaluate the transfer efficiency of the pulsed inductive discharge in Argon with 2.8% Hydrogen at gas pressures from 0.6 Pa up to 100 Pa at load voltages from 4 kV to 8 kV. Pulsed coil currents reached a maximum value of 18 kA with current rise times of 2 kA/mys while achieving a maximum energy transfer efficiency of 85% between the driving circuit and the plasma. Pulsed power peak values inside the plasma reached more than 2 MW.