Possible mechanisms for dust grain acceleration in plasmas

POSTER

Abstract

There exists conclusive evedince of charged dust grain acceleration in tokamak edges as well as in cosmic plasmas. Our objective here is to present an evaluative description of dust particle acceleration in magnetized dusty plasmas. Possible acceleration mechanisms involve ion drag force caused by plasma flow as well as strong ambipolar electric fields created by the ponderomotive force of large amplitude waves in magnetolasmas. Spatio-temporal scales over which the dust grain acceleration occurs are discussed.

*The work supported by the DFG through SFB591 and by the Swedish Research Council (VR).

Authors

  • Padma Kant Shukla

    • Department of Physics, Umea University, SE-90187 Umea, Sweden
    • Theoretical Physics IV, Ruhr-University Bochum, D-44780, Bochum, Germany

  • Lennart Stenflo

    • Department of Physics, Umea University, SE-90187 Umea, Sweden

  • Bengt Eliasson

    • Department of Physics, Umea University, SE-90187 Umea, Sweden
    • Theoretical Physics IV, Ruhr-University Bochum, D-44780 Bochum, Germany