Hannover 2016 – scientific programme

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P: Fachverband Plasmaphysik

P 10: Poster Session- Dusty Plasmas

P 10.8: Poster

Tuesday, March 1, 2016, 16:30–19:00, Empore Lichthof

Rotation of finite dust clusters — •Dietmar Block, Frank Wieben, and Jan Schablinski — IEAP der CAU Kiel

Finite dust clusters require a suitable confinement potential which is usually realized by radial electric fields in 2D and a sophisticated mixture of forces in 3D. For small clusters the assumption of a parabolic confinement potential is well justified. However, this is only an approximation and especially small asymmetries in the experimental setup easily result in an elliptical deformation of the confinement. By means of experiments and MD-simulations we have systematically studied the influence of such an asymmetry on cluster rotation for 2D systems. In a second set of experiments we have studied these processes for 3D-clusters. This contribution compares the dynamic processes observed in both systems. Special attention is paid to collective effects in strongly coupled systems.