München 2019 – wissenschaftliches Programm

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P: Fachverband Plasmaphysik

P 18: Postersitzung

P 18.27: Poster

Donnerstag, 21. März 2019, 16:30–18:30, Foyer Audimax

Pulsed rf-Discharge in Zyflex-Chamber — •Peter Huber1, Christina A. Knapek1, Daniel P. Mohr1, Erich Zaehringer1, Andrey M. Lipaev2, Vladimir I. Molotkov2, Hubertus M. Thomas1, and Vladmir E. Fortov21Deutsches Zentrum für Luft- und Raumfahrt, Institut für Materialphysik im Weltraum, Wessling, Germany — 2Joint Institute for High Temperatures of the Russian Academy of Sciences, Moscow, Russia

Interrupting rf-discharge is a well known method to control processes in plasmas. It can not only be used to control particle growth in semiconductor processing, but it is also a good method to change discharge properties like electron temperature more independently. So one could tune interactions in complex plasma systems in a more flexible way. Ekoplasma will provide the future lab for complex plasma research on the international space station ISS. Its discharge chamber Zyflex with its segmented movable electrodes gives many opportunities to modify and shape very specific discharge geometries. The four electrode channels are driven with a multifunctional rf-generator, which is capable of pulsing all channels individually with on/off times even below 50 µs. Microgravity will give us in addition the possibility to extend the switching times further into the range of long off-times without loosing particles due to gravitation. In this contribution, we will show new results of particles levitated in a pulsed gas discharge in the current laboratory setup of Ekoplasma. This work and some of the authors are funded by DLR/BMWi (FKZ 50WM1441).

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