Alfvén waves in dusty plasmas with plasma particles described by anisotropic kappa distributions

Galvao R.A.; Ziebell L.F.; Gaelzer R.; De Juli M.C.

Alfvén waves in dusty plasmas with plasma particles described by anisotropic kappa distributions

item.page.type

Artigo

Date

2012

item.page.ispartof

Physics of Plasmas

item.page.citationsscopus

5

Authors

Galvao R.A.
Ziebell L.F.
Gaelzer R.
De Juli M.C.

Abstract

We utilize a kinetic description to study the dispersion relation of Alfvén waves propagating parallelly to the ambient magnetic field in a dusty plasma, taking into account the fluctuation of the charge of the dust particles, which is due to inelastic collisions with electrons and ions. We consider a plasma in which the velocity distribution functions of the plasma particles are modelled as anisotropic kappa distributions, study the dispersion relation for several combinations of the parameters κ∥ and κ⊥, and emphasize the effect of the anisotropy of the distributions on the mode coupling which occurs in a dusty plasma, between waves in the branch of circularly polarized waves and waves in the whistler branch. © 2012 American Institute of Physics.

item.page.scopussubject

Circularly polarized waves , Dispersion relations , Dusty plasmas , Inelastic collision , Kappa distribution , Kinetic description , Mode coupling , Plasma particles