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dc.contributor.authorZiebell, Luiz Fernandopt_BR
dc.contributor.authorYoon, Peter H.pt_BR
dc.contributor.authorPavan, Joelpt_BR
dc.contributor.authorGaelzer, Rudipt_BR
dc.date.accessioned2015-01-15T02:15:10Zpt_BR
dc.date.issued2011pt_BR
dc.identifier.issn0004-637Xpt_BR
dc.identifier.urihttp://hdl.handle.net/10183/108974pt_BR
dc.description.abstractThe problem of electron-beam propagation in inhomogeneous solar wind is intimately related to the solar type II and/or type III radio bursts. Many scientists have addressed this issue in the past bymeans of quasi-linear theory, but in order to fully characterize the nonlinear dynamics, one must employ weak-turbulence theory. Available numerical solutions of the weak-turbulence theory either rely on only one nonlinear process (either decay or scattering), or when both nonlinear terms are included, the inhomogeneity effect is generally ignored. The present paper reports the full solution of weak-turbulence theory that includes both decay and scattering processes, and also incorporating the effects of density gradient. It is found that the quasi-linear effect sufficiently accounts for the primary Langmuir waves, but to properly characterize the back-scattered Langmuir wave, which is important for eventual radiation generation, it is found that both nonlinear decay and scattering processes make comparable contributions. Such a finding may be important in the quantitative analysis of the plasma emission process with application to solar type II and/or type III radio bursts.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofThe astrophysical journal. Bristol. Vol. 727, no. 1 (Jan. 2011), 16, 8 p.pt_BR
dc.rightsOpen Accessen
dc.subjectInstabilitiesen
dc.subjectPlasmas astrofisicospt_BR
dc.subjectMateria interplanetariapt_BR
dc.subjectPlasmasen
dc.subjectSolar winden
dc.subjectFontes de plasmapt_BR
dc.subjectTurbulência em plasmaspt_BR
dc.subjectTurbulenceen
dc.subjectVento solarpt_BR
dc.subjectWavesen
dc.titleNonlinear evolution of beam-plasma instability in inhomogeneous mediumpt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000771954pt_BR
dc.type.originEstrangeiropt_BR


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