Nonlinear ion-acoustic solitons in a magnetized quantum plasma with arbitrary degeneracy of electrons
Autor(a) principal: | |
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Data de Publicação: | 2016 |
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Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/150377 |
Resumo: | Nonlinear ion-acoustic waves are analyzed in a nonrelativistic magnetized quantum plasma with arbitrary degeneracy of electrons. Quantum statistics is taken into account by means of the equation of state for ideal fermions at arbitrary temperature. Quantum diffraction is described by a modified Bohm potential consistent with finite-temperature quantum kinetic theory in the long-wavelength limit. The dispersion relation of the obliquely propagating electrostatic waves in magnetized quantum plasma with arbitrary degeneracy of electrons is obtained. Using the reductive perturbationmethod, the corresponding Zakharov-Kuznetsov equation is derived, describing obliquely propagating two-dimensional ion-acoustic solitons in a magnetized quantum plasma with degenerate electrons having an arbitrary electron temperature. It is found that in the dilute plasma case only electrostatic potential hump structures are possible, while in dense quantum plasma, in principle, both hump and dip soliton structures are obtainable, depending on the electron plasma density and its temperature. The results are validated by comparison with the quantum hydrodynamic model including electron inertia and magnetization effects. Suitable physical parameters for observations are identified. |
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Haas, FernandoMahmood, Shahzad2016-12-31T02:21:25Z20161539-3755http://hdl.handle.net/10183/150377001008466Nonlinear ion-acoustic waves are analyzed in a nonrelativistic magnetized quantum plasma with arbitrary degeneracy of electrons. Quantum statistics is taken into account by means of the equation of state for ideal fermions at arbitrary temperature. Quantum diffraction is described by a modified Bohm potential consistent with finite-temperature quantum kinetic theory in the long-wavelength limit. The dispersion relation of the obliquely propagating electrostatic waves in magnetized quantum plasma with arbitrary degeneracy of electrons is obtained. Using the reductive perturbationmethod, the corresponding Zakharov-Kuznetsov equation is derived, describing obliquely propagating two-dimensional ion-acoustic solitons in a magnetized quantum plasma with degenerate electrons having an arbitrary electron temperature. It is found that in the dilute plasma case only electrostatic potential hump structures are possible, while in dense quantum plasma, in principle, both hump and dip soliton structures are obtainable, depending on the electron plasma density and its temperature. The results are validated by comparison with the quantum hydrodynamic model including electron inertia and magnetization effects. Suitable physical parameters for observations are identified.application/pdfengPhysical review. E, Statistical, nonlinear, and soft matter physics. Melville. Vol. 94, no. 3 (Sept. 2016), 033212, 11 p.Teoria cinetica de plasmasOndas íon-acústicas em plasmasSólitons em plasmasRelações de dispersãoNonlinear ion-acoustic solitons in a magnetized quantum plasma with arbitrary degeneracy of electronsEstrangeiroinfo: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:UFRGSORIGINAL001008466.pdf001008466.pdfTexto completo (inglês)application/pdf1309353http://www.lume.ufrgs.br/bitstream/10183/150377/1/001008466.pdfb9e8d25aba6b5be414bc99aafe10c13eMD51TEXT001008466.pdf.txt001008466.pdf.txtExtracted Texttext/plain50000http://www.lume.ufrgs.br/bitstream/10183/150377/2/001008466.pdf.txt17531d50bd579f59885a1ff83dc2932bMD52THUMBNAIL001008466.pdf.jpg001008466.pdf.jpgGenerated Thumbnailimage/jpeg2077http://www.lume.ufrgs.br/bitstream/10183/150377/3/001008466.pdf.jpg8b7f2a76f907bd1ca356964ab0dc7677MD5310183/1503772023-07-20 03:36:21.996817oai:www.lume.ufrgs.br:10183/150377Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-07-20T06:36:21Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Nonlinear ion-acoustic solitons in a magnetized quantum plasma with arbitrary degeneracy of electrons |
title |
Nonlinear ion-acoustic solitons in a magnetized quantum plasma with arbitrary degeneracy of electrons |
spellingShingle |
Nonlinear ion-acoustic solitons in a magnetized quantum plasma with arbitrary degeneracy of electrons Haas, Fernando Teoria cinetica de plasmas Ondas íon-acústicas em plasmas Sólitons em plasmas Relações de dispersão |
title_short |
Nonlinear ion-acoustic solitons in a magnetized quantum plasma with arbitrary degeneracy of electrons |
title_full |
Nonlinear ion-acoustic solitons in a magnetized quantum plasma with arbitrary degeneracy of electrons |
title_fullStr |
Nonlinear ion-acoustic solitons in a magnetized quantum plasma with arbitrary degeneracy of electrons |
title_full_unstemmed |
Nonlinear ion-acoustic solitons in a magnetized quantum plasma with arbitrary degeneracy of electrons |
title_sort |
Nonlinear ion-acoustic solitons in a magnetized quantum plasma with arbitrary degeneracy of electrons |
author |
Haas, Fernando |
author_facet |
Haas, Fernando Mahmood, Shahzad |
author_role |
author |
author2 |
Mahmood, Shahzad |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Haas, Fernando Mahmood, Shahzad |
dc.subject.por.fl_str_mv |
Teoria cinetica de plasmas Ondas íon-acústicas em plasmas Sólitons em plasmas Relações de dispersão |
topic |
Teoria cinetica de plasmas Ondas íon-acústicas em plasmas Sólitons em plasmas Relações de dispersão |
description |
Nonlinear ion-acoustic waves are analyzed in a nonrelativistic magnetized quantum plasma with arbitrary degeneracy of electrons. Quantum statistics is taken into account by means of the equation of state for ideal fermions at arbitrary temperature. Quantum diffraction is described by a modified Bohm potential consistent with finite-temperature quantum kinetic theory in the long-wavelength limit. The dispersion relation of the obliquely propagating electrostatic waves in magnetized quantum plasma with arbitrary degeneracy of electrons is obtained. Using the reductive perturbationmethod, the corresponding Zakharov-Kuznetsov equation is derived, describing obliquely propagating two-dimensional ion-acoustic solitons in a magnetized quantum plasma with degenerate electrons having an arbitrary electron temperature. It is found that in the dilute plasma case only electrostatic potential hump structures are possible, while in dense quantum plasma, in principle, both hump and dip soliton structures are obtainable, depending on the electron plasma density and its temperature. The results are validated by comparison with the quantum hydrodynamic model including electron inertia and magnetization effects. Suitable physical parameters for observations are identified. |
publishDate |
2016 |
dc.date.accessioned.fl_str_mv |
2016-12-31T02:21:25Z |
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/10183/150377 |
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1539-3755 |
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001008466 |
identifier_str_mv |
1539-3755 001008466 |
url |
http://hdl.handle.net/10183/150377 |
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. 94, no. 3 (Sept. 2016), 033212, 11 p. |
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info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf |
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