Weakly nonlinear ion-acoustic excitationsin a relativistic modelfor dense quantum plasma
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , |
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. |
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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 |
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UFRGS |
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Repositório Institucional da UFRGS |
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