Obliquely propagating Alfvén waves in a Maxwellian dusty plasma

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dc.contributor.authorGaelzer R.
dc.contributor.authorDe Juli M.C.
dc.contributor.authorSchneider R.S.
dc.contributor.authorZiebell L.F.
dc.date.accessioned2024-03-13T01:34:46Z
dc.date.available2024-03-13T01:34:46Z
dc.date.issued2009
dc.description.abstractA kinetic formulation developed to analyze wave propagation in dusty plasmas, which takes into account the charge variation of the dust particles, is utilized to study the propagation and damping of Alfvén waves propagating in oblique directions relative to the ambient magnetic field. A dusty plasma containing spherical and immobile dust grains in a homogeneous ambient magnetic field is considered. The charging process of the dust grains is assumed to be associated with the capture of electrons and ions by the dust particles during inelastic collisions between them and plasma particles. The dispersion relation and the damping rates of obliquely propagating Alfvén waves are obtained assuming Maxwellian distributions for electrons and ions in equilibrium. For the numerical analysis of the dispersion relation we use the average values of the inelastic collision frequency as an approximation, instead of the momentum dependent expressions originally derived in the kinetic formulation, and study the modifications which the presence of the dust particles causes in both the propagation and the damping of the Alfvén waves. In particular is discussed the competition between the different damping mechanisms, namely, the Landau damping and the damping associated with the dust charge variation, and it is shown that the inelastic collision frequency plays a pivotal role in the magnitude of the damping rates. © 2009 IOP Publishing Ltd.
dc.description.issuenumber1
dc.description.volume51
dc.identifier.doi10.1088/0741-3335/51/1/015011
dc.identifier.issn0741-3335
dc.identifier.urihttps://dspace.mackenzie.br/handle/10899/37365
dc.relation.ispartofPlasma Physics and Controlled Fusion
dc.rightsAcesso Restrito
dc.titleObliquely propagating Alfvén waves in a Maxwellian dusty plasma
dc.typeArtigo
local.scopus.citations12
local.scopus.eid2-s2.0-67649215704
local.scopus.subjectAverage values
local.scopus.subjectCharge variation
local.scopus.subjectCharging process
local.scopus.subjectDamping mechanisms
local.scopus.subjectDamping rate
local.scopus.subjectDispersion relations
local.scopus.subjectDust charge variation
local.scopus.subjectDust grains
local.scopus.subjectDust particle
local.scopus.subjectDusty plasmas
local.scopus.subjectInelastic collision
local.scopus.subjectLandau damping
local.scopus.subjectMaxwellian distribution
local.scopus.subjectMomentum-dependent
local.scopus.subjectN-waves
local.scopus.subjectOblique direction
local.scopus.subjectPlasma particles
local.scopus.updated2024-05-01
local.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=67649215704&origin=inward
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