Hannover 2016 – wissenschaftliches Programm

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P: Fachverband Plasmaphysik

P 3: Dusty Plasmas I

P 3.1: Hauptvortrag

Montag, 29. Februar 2016, 14:30–15:00, b302

Advances in Laser Manipulation of Dusty Plasmas — •Jan Schablinski, Frank Wieben, and Dietmar Block — Institut für Experimentelle und Angewandte Physik, Christian-Albrechts-Universität zu Kiel, Leibnizstraße 19, 24098 Kiel

Dusty plasmas allow to study fundamental processes of strongly coupled systems on a kinetic level. Besides the observation of self-excited processes, dust particles in a plasma can be effectively manipulated by several manipulation techniques. Laser manipulation is probably the most versatile tool to excite dynamical processes in dusty plasmas with negligible influence on the plasma conditions. The radiation pressure of intense laser beams was used in several experiments to excite lattice waves, oscillations of single particles or to study mach-cones, shear-waves and shear-flows in dusty plasmas [1] and thus contributed significantly to explore and explain the physics of dusty plasmas. Recently, optical traps for single particles were realized [2,3]. These traps are similar to well-known laser tweezers in colloidal suspensions [4] but have to overcome specific technical limitations in plasma experiments. This talk gives an overview of current laser manipulation tools and discusses their prospects and limitations for dusty plasma research.

[1] H. Thomsen, P. Ludwig, M. Bonitz, J. Schablinski, D. Block, A. Schella, and A. Melzer, J. Phys. D. Appl. Phys. 47, 383001 (2014). [2] V. Schneider and H. Kersten, Probl. At. Sci. Technol. 1, 164 (2013). [3] J. Schablinski, F. Wieben, and D. Block, Phys. Plasmas 22, 043703 (2015). [4] D.G. Grier, Nature 424, 810 (2003).