Kinetic Alfven wave instability in a Lorentzian dusty magnetoplasma

Journal Article · Fri Oct 15 00:00:00 EDT 2010 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.3491336· OSTI ID:21421306

Rubab, N; Biernat, H K ^[1]; Erkaev, N V ^[2]; Langmayr, D ^[3]

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1. Space Research Institute, Austrian Academy of Sciences, Schmiedlstrasse 6, A-8042 Graz, Austria and Institute of Physics, University of Graz, Universitaetplatz 5, A-8010 Graz (Austria)
2. Institute of Computational Modelling, 660036 Krasnoyarsk, Russia and Siberian Federal University, 660041 Krasnoyarsk (Russian Federation)
3. Virtual Vehicle Competence Center (vif), Inffeldgasse 21a, 8010 Graz (Austria)

This study presents a theoretical approach to analyze the influence of kappa distributed streaming ions and magnetized electrons on the plasma wave propagation in the presence of dust by employing two-potential theory. In particular, analytical expressions under certain conditions are derived for various modes of propagation comprising of kinetic Alfven wave streaming instability, two stream instability, and dust acoustic and whistler waves. A dispersion relation for kinetic Alfven-like streaming instability has been derived. The effects of dust particles and Lorentzian index on the growth rates and the threshold streaming velocity for the excitation of the instability are examined. The streaming velocity is observed to be destabilizing for slow motion and stabilizing for fast streaming motions. It is also observed that the presence of magnetic field and superthermal particles hinders the growth rate of instability. Possible applications to various space and astrophysical situations are discussed.

• OSTI ID: 21421306
• Journal Information: Physics of Plasmas, Vol. 17, Issue 10; Other Information: DOI: 10.1063/1.3491336; (c) 2010 American Institute of Physics; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ALFVEN WAVES
DISPERSION RELATIONS
DUSTS
ELECTRONS
EXCITATION
MAGNETIC FIELDS
PLASMA
PLASMA WAVES
TWO-STREAM INSTABILITY
WAVE PROPAGATION
WHISTLERS
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
ENERGY-LEVEL TRANSITIONS
FERMIONS
HYDROMAGNETIC WAVES
INSTABILITY
LEPTONS
NOISE
PLASMA INSTABILITY
PLASMA MICROINSTABILITIES
RADIATIONS
RADIO NOISE
RADIOWAVE RADIATION