Eelectrostatic decay of beam-generated plasma turbulence

Autores
Vasquez, Alberto Marcos; Gomez, Daniel Osvaldo
Año de publicación
2004
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The study of the evolution of a suprathermal electron beam traveling through a background plasma is relevant to the physics of solar flares and their associated type III solar radio bursts. As they evolve, guided by the coronal magnetic field lines, these beams generate Langmuir turbulence. The beam-generated turbulence is in turn responsible for the emission of radio photons at the second harmonic of the local plasma frequency, which are observed during type III solar radio bursts. To generate the radio emission, the beam-aligned Langmuir waves must coalesce, and therefore, a process capable of redirecting the turbulence in an effective fashion is required. Different theoretical models identify the electrostatic (ES) decay process L1 ! L2 þ S (where L indicates a Langmuir wave and S an ion-acoustic wave) as the redirecting mechanism for the L waves. Two different regimes have been proposed to play a key role: backscattering and diffusive (small-angle) scattering. This paper is a comparative analysis of the ES decay rate for each regime and of the different observable characteristics that are expected for the resulting ion-acoustic waves.
Fil: Vasquez, Alberto Marcos. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
Fil: Gomez, Daniel Osvaldo. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
Materia
Plasma turbulence
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/22200
Acceder
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spelling Eelectrostatic decay of beam-generated plasma turbulenceVasquez, Alberto MarcosGomez, Daniel OsvaldoPlasma turbulencehttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1The study of the evolution of a suprathermal electron beam traveling through a background plasma is relevant to the physics of solar flares and their associated type III solar radio bursts. As they evolve, guided by the coronal magnetic field lines, these beams generate Langmuir turbulence. The beam-generated turbulence is in turn responsible for the emission of radio photons at the second harmonic of the local plasma frequency, which are observed during type III solar radio bursts. To generate the radio emission, the beam-aligned Langmuir waves must coalesce, and therefore, a process capable of redirecting the turbulence in an effective fashion is required. Different theoretical models identify the electrostatic (ES) decay process L1 ! L2 þ S (where L indicates a Langmuir wave and S an ion-acoustic wave) as the redirecting mechanism for the L waves. Two different regimes have been proposed to play a key role: backscattering and diffusive (small-angle) scattering. This paper is a comparative analysis of the ES decay rate for each regime and of the different observable characteristics that are expected for the resulting ion-acoustic waves.Fil: Vasquez, Alberto Marcos. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; ArgentinaFil: Gomez, Daniel Osvaldo. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; ArgentinaIOP Publishing2004-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/22200Vasquez, Alberto Marcos; Gomez, Daniel Osvaldo; Eelectrostatic decay of beam-generated plasma turbulence; IOP Publishing; Astrophysical Journal; 607; 2; 12-2004; 1024-10310004-637XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1086/381934info:eu-repo/semantics/altIdentifier/doi/10.1086/381934info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:05:58Zoai:ri.conicet.gov.ar:11336/22200instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 15:05:58.315CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Eelectrostatic decay of beam-generated plasma turbulence
title Eelectrostatic decay of beam-generated plasma turbulence
spellingShingle Eelectrostatic decay of beam-generated plasma turbulence
Vasquez, Alberto Marcos
Plasma turbulence
title_short Eelectrostatic decay of beam-generated plasma turbulence
title_full Eelectrostatic decay of beam-generated plasma turbulence
title_fullStr Eelectrostatic decay of beam-generated plasma turbulence
title_full_unstemmed Eelectrostatic decay of beam-generated plasma turbulence
title_sort Eelectrostatic decay of beam-generated plasma turbulence
dc.creator.none.fl_str_mv Vasquez, Alberto Marcos
Gomez, Daniel Osvaldo
author Vasquez, Alberto Marcos
author_facet Vasquez, Alberto Marcos
Gomez, Daniel Osvaldo
author_role author
author2 Gomez, Daniel Osvaldo
author2_role author
dc.subject.none.fl_str_mv Plasma turbulence
topic Plasma turbulence
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The study of the evolution of a suprathermal electron beam traveling through a background plasma is relevant to the physics of solar flares and their associated type III solar radio bursts. As they evolve, guided by the coronal magnetic field lines, these beams generate Langmuir turbulence. The beam-generated turbulence is in turn responsible for the emission of radio photons at the second harmonic of the local plasma frequency, which are observed during type III solar radio bursts. To generate the radio emission, the beam-aligned Langmuir waves must coalesce, and therefore, a process capable of redirecting the turbulence in an effective fashion is required. Different theoretical models identify the electrostatic (ES) decay process L1 ! L2 þ S (where L indicates a Langmuir wave and S an ion-acoustic wave) as the redirecting mechanism for the L waves. Two different regimes have been proposed to play a key role: backscattering and diffusive (small-angle) scattering. This paper is a comparative analysis of the ES decay rate for each regime and of the different observable characteristics that are expected for the resulting ion-acoustic waves.
Fil: Vasquez, Alberto Marcos. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
Fil: Gomez, Daniel Osvaldo. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
description The study of the evolution of a suprathermal electron beam traveling through a background plasma is relevant to the physics of solar flares and their associated type III solar radio bursts. As they evolve, guided by the coronal magnetic field lines, these beams generate Langmuir turbulence. The beam-generated turbulence is in turn responsible for the emission of radio photons at the second harmonic of the local plasma frequency, which are observed during type III solar radio bursts. To generate the radio emission, the beam-aligned Langmuir waves must coalesce, and therefore, a process capable of redirecting the turbulence in an effective fashion is required. Different theoretical models identify the electrostatic (ES) decay process L1 ! L2 þ S (where L indicates a Langmuir wave and S an ion-acoustic wave) as the redirecting mechanism for the L waves. Two different regimes have been proposed to play a key role: backscattering and diffusive (small-angle) scattering. This paper is a comparative analysis of the ES decay rate for each regime and of the different observable characteristics that are expected for the resulting ion-acoustic waves.
publishDate 2004
dc.date.none.fl_str_mv 2004-12
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/22200
Vasquez, Alberto Marcos; Gomez, Daniel Osvaldo; Eelectrostatic decay of beam-generated plasma turbulence; IOP Publishing; Astrophysical Journal; 607; 2; 12-2004; 1024-1031
0004-637X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/22200
identifier_str_mv Vasquez, Alberto Marcos; Gomez, Daniel Osvaldo; Eelectrostatic decay of beam-generated plasma turbulence; IOP Publishing; Astrophysical Journal; 607; 2; 12-2004; 1024-1031
0004-637X
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1086/381934
info:eu-repo/semantics/altIdentifier/doi/10.1086/381934
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv IOP Publishing
publisher.none.fl_str_mv IOP Publishing
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.22299

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