SMuK 2023 – wissenschaftliches Programm

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P: Fachverband Plasmaphysik

P 12: Poster II

P 12.9: Poster

Mittwoch, 22. März 2023, 17:30–19:00, HSZ EG

Dust flows around an obstacle under microgravity — •Stefan Schütt, Christina Knapek, Daniel Maier, Daniel Mohr, and André Melzer — University of Greifswald, Greifswald, Germany

Dust flows around an obstacle in three-dimensionally extended dusty plasmas have been investigated on parabolic flights. A fixed tungsten wire has been installed in the plasma chamber perpendicular to the observation plane of a video microscopy setup and serves as an obstacle. Three different situations were created. First, the dust flow around the wire was investigated during the pull-out phase at the end of each parabola, when gravity sets in and the dust cloud moves downward past the wire. Second, a dust motion with respect to the fixed wire was generated by modulation of the electrode bias. And third, the wire was electrically biased and the reaction of the dust to bias voltage changes was studied. In this contribution, a first evaluation of all three situations will be presented.

This work was supported by DLR under grant no. 50WM1962.