Dust kinetic Alfvén and acoustic waves in a Lorentzian plasma
Phys. Plasmas 16, 103704 (2009); doi:10.1063/1.3244625
Published 15 October 2009
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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-
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.
©2009 American Institute of Physics
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.
©2009 American Institute of Physics
| History: | Received 4 May 2009; accepted 17 September 2009; published 15 October 2009 |
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http://link.aip.org/link/?PHPAEN/16/103704/1 |
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1070-664X (print)
1089-7674 (online)
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