SMuK 2023 – scientific programme
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P: Fachverband Plasmaphysik
P 12: Poster II
P 12.13: Poster
Wednesday, March 22, 2023, 17:30–19:00, HSZ EG
Anaylsis of microparticle trajectories during free fall — Andreas S. Schmitz1, •Luisa Hanstein1, Michael Kretschmer1, Christoph Lotz2, and Markus H. Thoma1 — 1I. Physikalisches Institut, Justus-Liebig-Universität Gießen, Germany — 2Instititut für Transport- und Automatisierungstechnik, Gottfried Wilhelm Leibniz Universität Hannover, Germany
In a radiofrequency plasma chamber microparticles were placed in a low-pressure plasma, where they became charged and levitated against gravity by an electric field. The argon-filled chamber was installed in the University of Hannover's drop tower, the Einstein Elevator. As the setup fell, the microparticles spread into the bulk plasma due to the electric field and were imaged with a CCD camera. The trajectories of the microparticles, which were determined by image analysis, were used to determine the electric forces acting on the microparticles. Considering fluid dynamic simulations, we were able to determine the electric field acting on the microparticles.