Mode-coupling of low-frequency electromagnetic waves in dusty plasmas with temperature anisotropy

Journal Article · Thu Feb 15 04:00:00 EST 2007 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.2435704· OSTI ID:20974819

Juli, M C. de; Schneider, R S; Ziebell, L F; Gaelzer, R ^[1]

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1. Centro de Radio-Astronomia e Astrofisica Mackenzie, CRAAM, Universidade Presbiteriana Mackenzie, Rua da Consolacao 896, CEP: 01302-907, Sao Paulo, SP (Brazil)

This paper studies the effects of the presence of dust particles with variable charge, in fully ionized, homogeneous, magnetized plasma of electrons and ions, with the electrons and ions described by bi-Maxwellian distributions in the equilibrium. The dispersion relation and the absorption rate are obtained for low frequency waves, with frequencies much lower than the ion cyclotron frequency. Two branches are obtained, identified as the whistler branch and the branch of circularly polarized waves, featuring damping due to the Landau damping process and to the collisional charging of the dust particles. The effects of the anisotropy of temperature on the damping rate of low frequency waves, and on the mode coupling which was demonstrated to occur in the isotropic situation, are numerically investigated. The results obtained show that in the anisotropic case the point of mode coupling is displaced to different values of dust density, and that a new point of mode coupling may appear from the effect of the temperature anisotropy.

• OSTI ID: 20974819
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 2 Vol. 14; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ABSORPTION
ANISOTROPY
COLLISIONS
CYCLOTRON FREQUENCY
DISPERSION RELATIONS
ELECTRON TEMPERATURE
ELECTRONS
ION TEMPERATURE
IONS
LANDAU DAMPING
PARTICLES
PLASMA
PLASMA DENSITY
WHISTLERS