Magnetothermal instabilities in magnetized anisotropic plasmas

Página do item simplificado
dc.contributor.authorNakwacki, M. S.
dc.contributor.authorPeralta-Ramos, J. [UNESP]
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-27T11:26:53Z
dc.date.available2014-05-27T11:26:53Z
dc.date.issued2012-07-13
dc.description.abstractUsing the 16-moment transport equations for an ideal anisotropic collisionless plasma we analyze the influence of pressure anisotropy on the magnetothermal (MTI) and heat-flux-driven buoyancy (HBI) instabilities. We calculate the dispersion relation and the growth rates for these instabilities in the presence of a background heat flux and for configurations with static pressure anisotropy, finding that when the frequency at which heat conduction acts is much larger than any other frequency in the system (i.e. weak magnetic field) the pressure anisotropy has no effect on the MTI/HBI, provided the degree of anisotropy is small. In contrast, when this ordering of timescales does not apply the instability criteria depend on pressure anisotropy.en
dc.description.affiliationInstituto de Astronomía, Geofísica e Ciências Atmosféricas Universidade de São Paulo Cidade Universitária, Rua do Matão 1226, 05508-090 São Paulo
dc.description.affiliationInstituto de Física Teórica Universidade Estadual Paulista, Rua Doutor Bento Teobaldo Ferraz 271 - Bloco II, 01140-070 São Paulo
dc.description.affiliationUnespInstituto de Física Teórica Universidade Estadual Paulista, Rua Doutor Bento Teobaldo Ferraz 271 - Bloco II, 01140-070 São Paulo
dc.identifierhttp://dx.doi.org/10.1088/1742-6596/370/1/012038
dc.identifier.citationJournal of Physics: Conference Series, v. 370, n. 1, 2012.
dc.identifier.doi10.1088/1742-6596/370/1/012038
dc.identifier.issn1742-6588
dc.identifier.issn1742-6596
dc.identifier.scopus2-s2.0-84863633077
dc.identifier.urihttp://hdl.handle.net/11449/73434
dc.language.isoeng
dc.relation.ispartofJournal of Physics: Conference Series
dc.relation.ispartofsjr0,241
dc.relation.ispartofsjr0,241
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectAnisotropic plasmas
dc.subjectDegree of anisotropy
dc.subjectDispersion relations
dc.subjectInstability criterion
dc.subjectPressure anisotropy
dc.subjectStatic pressure
dc.subjectTime-scales
dc.subjectTransport equation
dc.subjectWeak magnetic fields
dc.subjectHeat flux
dc.subjectAnisotropy
dc.titleMagnetothermal instabilities in magnetized anisotropic plasmasen
dc.typeTrabalho apresentado em evento
dcterms.licensehttp://iopscience.iop.org/page/copyright
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Física Teórica (IFT), São Paulopt

Arquivos

Coleções

Artigos - Instituto de Física Teórica (IFT)