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Author(s):
M. Salimullah, B. Dasgupta, K. Watanabe and T. Sato
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Title:
Modification and Damping of Alfven Waves in a Magnetized Dusty Plasma
Date of publication:
Oct. 1994
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Key words:
Dusty plasmas, Alfven waves, damping of waves, kinetic theory
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Abstract:
The dispersion characteristics of the circularly polarized electromagnetic waves along a homogeneous magnetic field in a dusty plasma have been investigated theoretically. The Vlasov equation has been employed to find the response of the magnetized plasma particles where the dust grains form a static background of highly charged and massive centers having certain correlation. It is found tat in addition to the usual Landau damping which is negligible in the low temperature approximation, a novel mechanism of damping of the Alfven waves due to the dust comes into play. The modification and damping of the Alfven waves depend on the dust perturbation parameters, unequal densities of plasma particles, the average correlation length of the dust grains, temperature of the plasma and the magnetic field.
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