Kinetic Alfven wave instability in a Lorentzian dusty magnetoplasma

Тип публикации: статья из журнала

Год издания: 2010

Идентификатор DOI: 10.1063/1.3491336

Ключевые слова: Analytical expressions, Dispersion relations, Distributed streaming, Dust acoustic, Dust particle, Growth rate of instabilities, Magnetized electrons, N-waves, Potential theory, Slow motion, Streaming velocity, Theoretical approach, Two stream instability, Whistler waves, Dust, Magnetic field effects, Plasma waves, Stability, Acoustic wave propagation

Аннотация: 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. (C) 2010 American Institute of Physics. [doi:10.1063/1.3491336]

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Издание

Журнал: PHYSICS OF PLASMAS

Выпуск журнала: Vol. 17, Is. 10

ISSN журнала: 1070664X

Место издания: MELVILLE

Издатель: AMER INST PHYSICS

Авторы

  • Rubab N. (And Institute of Physics,University of Graz)
  • Biernat H.K. (And Institute of Physics,University of Graz)
  • Erkaev N.V. (Siberian Federal University)
  • Langmayr D. (Virtual Vehicle Competence Center (Vif))

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