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dc.contributor.authorCavalcanti, Claudio Jose de Holandapt_BR
dc.contributor.authorSchneider, Ruth de Souzapt_BR
dc.contributor.authorZiebell, Luiz Fernandopt_BR
dc.date.accessioned2014-03-20T01:48:22Zpt_BR
dc.date.issued1997pt_BR
dc.identifier.issn0103-9733pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/88640pt_BR
dc.description.abstractEmission and propagation of the auroral kilometric radiation in the auroral zones of the Earth are investigated with the use of the transfer equation for the intensity of the wave along the trajectory, which is obtained with the formulation of the geometríc optics. The cyclotron emissivity and the components of the dielectric tensor are evaluated using the locally homogeneous plasma approximation, taking into account thermal effects and con­ sidering both the energetic and the background electron populations. For frequencies in the vicinity of the electron cyclotron frequency we consider a range of values of the parallel wave number which result in significant amplification. The effect of the finite width of the amoral cavities is also investigated. Our results show that the inclusion of the effect of wave emissivity along the trajectory is not sufficient to modify significatively the efficiency of the amplification.en
dc.format.mimetypeapplication/pdf
dc.language.isoengpt_BR
dc.relation.ispartofBrazilian Journal of Physics. São Paulo. Vol. 27, no. 1 (Mar.1997), p. 33-43pt_BR
dc.rightsOpen Accessen
dc.subjectFisica dos fluidos, fisica de plasmas e descargas eletricaspt_BR
dc.subjectRadiacao quilometrica das auroras : Plasmas : Otica geometrica : Ondas eletromagneticaspt_BR
dc.subjectPropagacao de ondas eletromagneticas em plasmaspt_BR
dc.titleEmissivity and growth of auroral kilometric radiation in source regions with perpendicular gradientspt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000188517pt_BR
dc.type.originNacionalpt_BR


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