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Hannover 2016 – scientific programme

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P: Fachverband Plasmaphysik

P 14: Dusty Plasmas II

P 14.4: Talk

Wednesday, March 2, 2016, 11:55–12:10, f102

Waves and Instabilities in Nandust Clouds at High Magnetic Fields — •Franko Greiner, Sebastian Groth, Hendrik Jung, Benjamin Tadsen, and Alexander Piel — Institut für Experimentelle und Angewandte Physik, Christian-Albrechts-Universität Kiel

Under certain conditions nanodust that is confined in an argon plasma of an rf-driven parallel plate discharge show strong dust-density waves (DDW). DDWs can easily be studied by means of video microscopy. Applying magnetic inductions of up to 4 Tesla perpendicular to the surface of the electrodes leads to a change of the shape of the dust cloud and the size of the void and modifies the DDWs. In a systematic study we explore these modifications for different magnetic fields. One obstacle is to separate effects that result from a change of the equilibrium density and potential profiles of the magnetized plasma from the direct effects of the magnetic field on the DDWs.

This work was supported by Deutsche Forschungsgemeinschaft DFG in the framework of the SFB-TR24 Greifswald-Kiel, Project A2.

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