Current driven instability in collisional dusty plasmas

B. P. Pandey, S. V. Vladimirov, A. Samarian

Research output: Contribution to journalArticle

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Abstract

The current driven electromagnetic instability in a collisional, magnetized, dusty medium is considered in the present work. It is shown that in the presence of the magnetic field aligned current, the low-frequency waves in the medium can become unstable if the ratio of the current to the ambient field is larger than the light speed times the wave number. The growth rate of the instability depends upon the ratio of the Alfvén to the dust cyclotron frequency as well as on the ratio of the current density J to the dust charge density Zend, where Z is the number of electronic charge on the grain, e is the electron charge, and nd is the dust number density. The typical growth rate of this instability is on the order of Alfvén frequency which compares favorably with the electrostatic, cross-field current driven, Farley-Buneman instability and thus could play an important role in the Earth's ionosphere.

Original languageEnglish
Article number113708
Pages (from-to)113708
Number of pages1
JournalPhysics of Plasmas
Volume16
Issue number11
DOIs
Publication statusPublished - 2009

Bibliographical note

Copyright 2009 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Physics of Plasmas, Volume 16, Issue 11, Article 113708 and may be found at http://link.aip.org/link/?PHPAEN/16/113708/1.

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