Effects of dust-charge fluctuation on the damping of Alfvén waves in dusty plasmas
Fecha
2005Autor
Materia
Abstract
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 Alfvén waves are obtained. For the numer ...
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 Alfvén 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 Alfvén wave. A novel process of mode coupling of low-frequency waves is demonstrated to occur due to the presence of dust particles. ...
En
Physics of Plasmas. Woodbury. Vol. 12, no. 5 (May 2005), 052109, 12 p.
Origen
Estranjero
Colecciones
-
Artículos de Periódicos (39558)Ciencias Exactas y Naturales (6036)
Este ítem está licenciado en la Creative Commons License