Effects of dust-charge fluctuation on the damping of Alfven waves in dusty plasmas

Journal Article · Sun May 15 04:00:00 EDT 2005 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.1899647· OSTI ID:20722041

Juli, M.C. de; Schneider, R S; Ziebell, L F; Jatenco-Pereira, V ^[1]

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1. Instituto de Astronomia, Geofisica e Ciencias Atmosfericas, Universidade de Sao Paulo, Rua do Matao 1226, Cidade Universitaria, CEP 05508-900 Sao Paulo, Sao Paulo (Brazil)

Using a completely kinetic description to analyze wave propagation in dusty plasmas, the case of propagation of waves exactly parallel to the external magnetic field and Maxwellian distributions for electrons and ions in the equilibrium is considered. A model for the charging process of dust particles which depends on the frequency of inelastic collisions between dust particles and electrons and ions is used. The dispersion relation and damping rates for Alfven waves are obtained. For the numerical solutions, the average value of the inelastic collision frequency is used as an approximation. The results show that the presence of dust particles with variable charge in the plasma produces significant additional damping of the Alfven wave. A novel process of mode coupling of low-frequency waves is demonstrated to occur due to the presence of dust particles.

• OSTI ID: 20722041
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 5 Vol. 12; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ALFVEN WAVES
DAMPING
DISPERSION RELATIONS
DUSTS
ELECTROMAGNETIC RADIATION
FLUCTUATIONS
NONLINEAR PROBLEMS
PLASMA
WAVE PROPAGATION