Weakly nonlinear ion-acoustic excitationsin a relativistic modelfor dense quantum plasma

Detalhes bibliográficos
Autor(a) principal: Behery, Ebraheem Ebraheem
Data de Publicação: 2016
Outros Autores: Haas, Fernando, Kourakis, Ioannis
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/141311
Resumo: The dynamics of linear and nonlinear ionic-scale electrostatic excitations propagating in a magnetized relativistic quantum plasma is studied. A quantum-hydrodynamic model is adopted and degenerate statistics for the electrons is taken into account. The dispersion properties of linear ion acoustic waves are examined in detail. A modified characteristic charge screening length and “sound speed” are introduced, for relativistic quantum plasmas. By employing the reductive perturbation technique, a Zakharov-Kuznetzov-type equation is derived. Using the small-k expansion method, the stability profile of weakly nonlinear slightly supersonic electrostatic pulses is also discussed. The effect of electron degeneracy on the basic characteristics of electrostatic excitations is investigated. The entire analysis is valid in a three-dimensional as well as in two-dimensional geometry. A brief discussion of possible applications in laboratory and space plasmas is included.
id UFRGS-2_83bdd5c58be876be2e93fae74c98b935
oai_identifier_str oai:www.lume.ufrgs.br:10183/141311
network_acronym_str UFRGS-2
network_name_str Repositório Institucional da UFRGS
repository_id_str
spelling Behery, Ebraheem EbraheemHaas, FernandoKourakis, Ioannis2016-05-19T02:09:39Z20161539-3755http://hdl.handle.net/10183/141311000991235The dynamics of linear and nonlinear ionic-scale electrostatic excitations propagating in a magnetized relativistic quantum plasma is studied. A quantum-hydrodynamic model is adopted and degenerate statistics for the electrons is taken into account. The dispersion properties of linear ion acoustic waves are examined in detail. A modified characteristic charge screening length and “sound speed” are introduced, for relativistic quantum plasmas. By employing the reductive perturbation technique, a Zakharov-Kuznetzov-type equation is derived. Using the small-k expansion method, the stability profile of weakly nonlinear slightly supersonic electrostatic pulses is also discussed. The effect of electron degeneracy on the basic characteristics of electrostatic excitations is investigated. The entire analysis is valid in a three-dimensional as well as in two-dimensional geometry. A brief discussion of possible applications in laboratory and space plasmas is included.application/pdfengPhysical review. E, Statistical, nonlinear, and soft matter physics. Melville. Vol. 93, no. 2 (Feb. 2016), 023206, 9 p.EletrostáticaOndas íon-acústicas em plasmasWeakly nonlinear ion-acoustic excitationsin a relativistic modelfor dense quantum plasmaEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL000991235.pdf000991235.pdfTexto completo (inglês)application/pdf709145http://www.lume.ufrgs.br/bitstream/10183/141311/1/000991235.pdf35eab2d45efccf0c8a94793ef9c56a4eMD51TEXT000991235.pdf.txt000991235.pdf.txtExtracted Texttext/plain35549http://www.lume.ufrgs.br/bitstream/10183/141311/2/000991235.pdf.txtc4040f979edd93829a247e3bcdd661e9MD52THUMBNAIL000991235.pdf.jpg000991235.pdf.jpgGenerated Thumbnailimage/jpeg2166http://www.lume.ufrgs.br/bitstream/10183/141311/3/000991235.pdf.jpg0ae2325b2606540da0eb364cf5c3d79bMD5310183/1413112023-07-20 03:36:08.313728oai:www.lume.ufrgs.br:10183/141311Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-07-20T06:36:08Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Weakly nonlinear ion-acoustic excitationsin a relativistic modelfor dense quantum plasma
title Weakly nonlinear ion-acoustic excitationsin a relativistic modelfor dense quantum plasma
spellingShingle Weakly nonlinear ion-acoustic excitationsin a relativistic modelfor dense quantum plasma
Behery, Ebraheem Ebraheem
Eletrostática
Ondas íon-acústicas em plasmas
title_short Weakly nonlinear ion-acoustic excitationsin a relativistic modelfor dense quantum plasma
title_full Weakly nonlinear ion-acoustic excitationsin a relativistic modelfor dense quantum plasma
title_fullStr Weakly nonlinear ion-acoustic excitationsin a relativistic modelfor dense quantum plasma
title_full_unstemmed Weakly nonlinear ion-acoustic excitationsin a relativistic modelfor dense quantum plasma
title_sort Weakly nonlinear ion-acoustic excitationsin a relativistic modelfor dense quantum plasma
author Behery, Ebraheem Ebraheem
author_facet Behery, Ebraheem Ebraheem
Haas, Fernando
Kourakis, Ioannis
author_role author
author2 Haas, Fernando
Kourakis, Ioannis
author2_role author
author
dc.contributor.author.fl_str_mv Behery, Ebraheem Ebraheem
Haas, Fernando
Kourakis, Ioannis
dc.subject.por.fl_str_mv Eletrostática
Ondas íon-acústicas em plasmas
topic Eletrostática
Ondas íon-acústicas em plasmas
description The dynamics of linear and nonlinear ionic-scale electrostatic excitations propagating in a magnetized relativistic quantum plasma is studied. A quantum-hydrodynamic model is adopted and degenerate statistics for the electrons is taken into account. The dispersion properties of linear ion acoustic waves are examined in detail. A modified characteristic charge screening length and “sound speed” are introduced, for relativistic quantum plasmas. By employing the reductive perturbation technique, a Zakharov-Kuznetzov-type equation is derived. Using the small-k expansion method, the stability profile of weakly nonlinear slightly supersonic electrostatic pulses is also discussed. The effect of electron degeneracy on the basic characteristics of electrostatic excitations is investigated. The entire analysis is valid in a three-dimensional as well as in two-dimensional geometry. A brief discussion of possible applications in laboratory and space plasmas is included.
publishDate 2016
dc.date.accessioned.fl_str_mv 2016-05-19T02:09:39Z
dc.date.issued.fl_str_mv 2016
dc.type.driver.fl_str_mv Estrangeiro
info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10183/141311
dc.identifier.issn.pt_BR.fl_str_mv 1539-3755
dc.identifier.nrb.pt_BR.fl_str_mv 000991235
identifier_str_mv 1539-3755
000991235
url http://hdl.handle.net/10183/141311
dc.language.iso.fl_str_mv eng
language eng
dc.relation.ispartof.pt_BR.fl_str_mv Physical review. E, Statistical, nonlinear, and soft matter physics. Melville. Vol. 93, no. 2 (Feb. 2016), 023206, 9 p.
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFRGS
instname:Universidade Federal do Rio Grande do Sul (UFRGS)
instacron:UFRGS
instname_str Universidade Federal do Rio Grande do Sul (UFRGS)
instacron_str UFRGS
institution UFRGS
reponame_str Repositório Institucional da UFRGS
collection Repositório Institucional da UFRGS
bitstream.url.fl_str_mv http://www.lume.ufrgs.br/bitstream/10183/141311/1/000991235.pdf
http://www.lume.ufrgs.br/bitstream/10183/141311/2/000991235.pdf.txt
http://www.lume.ufrgs.br/bitstream/10183/141311/3/000991235.pdf.jpg
bitstream.checksum.fl_str_mv 35eab2d45efccf0c8a94793ef9c56a4e
c4040f979edd93829a247e3bcdd661e9
0ae2325b2606540da0eb364cf5c3d79b
bitstream.checksumAlgorithm.fl_str_mv MD5
MD5
MD5
repository.name.fl_str_mv Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)
repository.mail.fl_str_mv
_version_ 1801224900190404608

Registros relacionados