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IJPAP Vol.44(11) [November 2006] >


Title: Kinetic model of Alfven wave in dusty plasma
Authors: Shukla, Nidhi
Mishra, Ruchi
Varma, P
Tiwari, M S
Keywords: Dusty plasma
Kinetic Alfven wave
Plasma sheet boundary layer
Auroral acceleration region
Issue Date: Nov-2006
Publisher: CSIR
IPC CodeH05H
Abstract: The kinetic Alfven waves are investigated for the dusty plasma using Maxwell-Boltzmann-Vlasov equations. The dispersion relation and damping rate are derived including the effect of negatively charged dust grain in the magnetized plasma. The effect of ion-gyro radius is included in the analysis for both the regions k1ρi<1and k1ρi>1, where k1 the perpendicular wave number is and ρi is the ion-gyro radius. The wave frequency and damping rate are numerically analyzed for auroral acceleration region. It is observed that dust grains modify the wave frequency and damping rate. The effect of dust particle is to increase the wave frequency and enhance the damping rate. It is predicted that energy carried by kinetic Alfven wave observed in plasma sheet boundary layer by different satellites is dissipated in the auroral acceleration region accelerating auroral particle responsible to the auroral emission processes.
Page(s): 834-844
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Source:IJPAP Vol.44(11) [November 2006]

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