TITLE

Dust kinetic Alfvén and acoustic waves in a Lorentzian plasma

AUTHOR(S)
Rubab, N.; Erkaev, N. V.; Biernat, H. K.
PUB. DATE
October 2009
SOURCE
Physics of Plasmas;Oct2009, Vol. 16 Issue 10, p103704
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Dust kinetic Alfvén waves (DKAWs) with finite Larmor radius effects have been examined rigorously in a uniform dusty plasma in the presence of an external magnetic field. A dispersion relation of low-frequency DKAW on the dust acoustic velocity branch is obtained in a low-β Lorentzian plasma. It is found that the influence of the Lorentzian distribution function is more effective for perpendicular component of group velocity as compared with parallel one. Lorentzian-type charging currents are obtained with the aid of Vlasov theory. Damping/instability due to dust charge fluctuation is found to be insensitive with the form of distribution function for DKAW. The possible applications to dusty space plasmas are pointed out.
ACCESSION #
44910022

 

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