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Excitation of electrostatic ion-cyclotron-like modes by the electron density ripple in dusty magnetoplasmas

Published online by Cambridge University Press:  01 August 2009

P. K. SHUKLA
P. K. SHUKLA*
Affiliation:
Institut für Theoretische Physik IV, Ruhr-Universität Bochum, D-44780 Bochum, Germany ([email protected])
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Abstract

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It is shown that electrostatic ion-cyclotron (EIC)-like modes can be excited by the pre-existing electron density ripple across the external magnetic field in a dusty magnetoplasma. For this purpose, we use the ion continuity and momentum equations, together with the Boltzmann-distributed electrons, and derive the standard Mathieu equation. The latter admits unstable solutions, demonstrating that the EIC-like modes in dusty magnetoplasmas can be driven due to the free energy in the electron density ripple.

Type
Letter to the Editor
Information
Journal of Plasma Physics , Volume 75 , Issue 4 , August 2009 , pp. 433 - 436
Copyright
Copyright © Cambridge University Press 2009

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