Stuttgart 2012 – wissenschaftliches Programm

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P: Fachverband Plasmaphysik

P 21: Poster: Staubige Plasmen

P 21.14: Poster

Donnerstag, 15. März 2012, 16:30–19:00, Poster.III

dust grain charging in the wake of other grains — •Dietmar Block¹, Jan Schablinski¹, Jan Carstensen¹, Franko Greiner¹, Alexander Piel¹, and Wojciech Miloch² — ¹IEAP der CAU Kiel, 24098 Kiel, Germany — ²University Oslo, Oslo, Norway

The charging of dust grains in sub - and supersonic plasma flows in the wake of other grains is studied by numerical simulations and experiments. Once a particle enters a Mach cone originating from another grain it is exposed to noteably different plasma conditions. Thus, a new balance of electron and ion currents establishes which results in a modified grain charge. This contribution uses the DiP3D three dimensional particle-in-cell code with both electrons and ions represented as numerical particles and the phase resolved resonance method to compare experimental observations and simulations of several aligned grains in sub- and supersonic plasmas flows.