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EFFECT OF DUST GRAIN PARAMETERS ON ION BEAM DRIVEN ION CYCLOTRON WAVES IN A MAGNETIZED PLASMA

By V. Prakash, S. C. Sharma, V. Vijayshri, and R. Gupta

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Abstract:
Excitation of electrostatic ion cyclotron waves (EICW) in a magnetized dusty plasma by an ion beam is studied taking into account the effect of dust particle size, dust particle charge and dust particle number density variations. The presence of dust grain charge fluctuations modifies the dispersion relation for ion cyclotron waves in dusty plasma. It is shown that in the absence of ion beam, the ion cyclotron mode damps due to dust charge fluctuations and an additional damping dust charge fluctuation mode is induced in plasma. The ion beam propagating parallel to the magnetic field drives ion cyclotron waves to instability via Cerenkov interaction. Using the analytical and numerical results the influence of the relative density of negatively charged dust particles on growth rate of ion cyclotron waves is studied. The dust grain size distribution has also significant contributions on the growth rate of ion cyclotron waves.

Citation:
V. Prakash, S. C. Sharma, V. Vijayshri, and R. Gupta, "Effect of Dust Grain Parameters on Ion Beam Driven Ion Cyclotron Waves in a Magnetized Plasma," Progress In Electromagnetics Research M, Vol. 36, 161-168, 2014.
doi:10.2528/PIERM14041003

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