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P: Fachverband Plasmaphysik

P 14: Complex and Dusty Plasmas II

P 14.2: Vortrag

Mittwoch, 20. März 2019, 11:30–11:55, HS 20

Diagnostics and phenomena of three-dimensional dusty plasmas — •Michael Himpel and André Melzer — University Greifswald, Germany

Dusty plasmas are plasmas that contain micrometer-sized particles, which can be individually imaged by modern cameras. In the laboratory, the particles usually sediment to the bottom of the plasma due to the gravitational force where they form flat systems. Many interesting effects, e.g. self-excited waves and certain phase transitions, are only present in volumetric systems. These effects are often related to a critical dust particle number density, which can be exceeded in three-dimensional, but not in two-dimensional systems. This talk will show different possibilities to realize experiments with three-dimensional dusty plasmas and a brief overview about different phenomena is given. Additionally, imaging diagnostics are presented that are capable to retrieve three-dimensional particle trajectories in three-dimensional particle systems.