Weak turbulence theory for collisional plasmas
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/10183/141285 |
Resumo: | Plasma is an ionized gas inwhich the collective behavior dominates over the individual particle interactions. For this reason, plasma is often treated as collisionless or collision-free. However, the discrete nature of the particles can be important, and often, the description of plasmas is incomplete without properly taking the discrete particle effects into account. The weak turbulence theory is a perturbative nonlinear theory, whose essential formalism was developed in the late 1950s and 1960s and continued on through the early 1980s. However, the standard material found in the literature does not treat the discrete particle effects and the associated fluctuations emitted spontaneously by thermal particles completely. Plasma particles emit electromagnetic fluctuations in all frequencies and wave vectors, but in the standard literature, the fluctuations are approximately treated by considering only those frequency-wave number regimes corresponding to the eigenmodes (or normal modes) satisfying the dispersion relations, while ignoring contributions from noneigenmodes. The present paper shows that the noneigenmode fluctuations modify the particle kinetic equation so that the generalized equation includes the Balescu-L´enard-Landau collision integral and also modify the wave kinetic equation to include not only the collisional damping term but also a term that depicts the bremsstrahlung emission of plasma normal modes. |
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Yoon, Peter H.Ziebell, Luiz FernandoKontar, EduardSchlickeiser, Reinhard2016-05-19T02:09:22Z20161539-3755http://hdl.handle.net/10183/141285000991242Plasma is an ionized gas inwhich the collective behavior dominates over the individual particle interactions. For this reason, plasma is often treated as collisionless or collision-free. However, the discrete nature of the particles can be important, and often, the description of plasmas is incomplete without properly taking the discrete particle effects into account. The weak turbulence theory is a perturbative nonlinear theory, whose essential formalism was developed in the late 1950s and 1960s and continued on through the early 1980s. However, the standard material found in the literature does not treat the discrete particle effects and the associated fluctuations emitted spontaneously by thermal particles completely. Plasma particles emit electromagnetic fluctuations in all frequencies and wave vectors, but in the standard literature, the fluctuations are approximately treated by considering only those frequency-wave number regimes corresponding to the eigenmodes (or normal modes) satisfying the dispersion relations, while ignoring contributions from noneigenmodes. The present paper shows that the noneigenmode fluctuations modify the particle kinetic equation so that the generalized equation includes the Balescu-L´enard-Landau collision integral and also modify the wave kinetic equation to include not only the collisional damping term but also a term that depicts the bremsstrahlung emission of plasma normal modes.application/pdfengPhysical review. E, Statistical, nonlinear, and soft matter physics. Vol. 93, no. 3 (Mar. 2016), 033203, 29 p.Teoria cineticaTurbulência em plasmasProcessos de colisao em plasmasWeak turbulence theory for collisional plasmasEstrangeiroinfo: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:UFRGSORIGINAL000991242.pdf000991242.pdfTexto completo (inglês)application/pdf367962http://www.lume.ufrgs.br/bitstream/10183/141285/1/000991242.pdf925ce684344c006572dcfcc744d06d6dMD51TEXT000991242.pdf.txt000991242.pdf.txtExtracted Texttext/plain106740http://www.lume.ufrgs.br/bitstream/10183/141285/2/000991242.pdf.txt75d12e0c7876afbbfbc3b63a3118131cMD52THUMBNAIL000991242.pdf.jpg000991242.pdf.jpgGenerated Thumbnailimage/jpeg2076http://www.lume.ufrgs.br/bitstream/10183/141285/3/000991242.pdf.jpg04d927e6f506961c58d2b731ddc05c54MD5310183/1412852023-09-23 03:33:46.777735oai:www.lume.ufrgs.br:10183/141285Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-09-23T06:33:46Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Weak turbulence theory for collisional plasmas |
title |
Weak turbulence theory for collisional plasmas |
spellingShingle |
Weak turbulence theory for collisional plasmas Yoon, Peter H. Teoria cinetica Turbulência em plasmas Processos de colisao em plasmas |
title_short |
Weak turbulence theory for collisional plasmas |
title_full |
Weak turbulence theory for collisional plasmas |
title_fullStr |
Weak turbulence theory for collisional plasmas |
title_full_unstemmed |
Weak turbulence theory for collisional plasmas |
title_sort |
Weak turbulence theory for collisional plasmas |
author |
Yoon, Peter H. |
author_facet |
Yoon, Peter H. Ziebell, Luiz Fernando Kontar, Eduard Schlickeiser, Reinhard |
author_role |
author |
author2 |
Ziebell, Luiz Fernando Kontar, Eduard Schlickeiser, Reinhard |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Yoon, Peter H. Ziebell, Luiz Fernando Kontar, Eduard Schlickeiser, Reinhard |
dc.subject.por.fl_str_mv |
Teoria cinetica Turbulência em plasmas Processos de colisao em plasmas |
topic |
Teoria cinetica Turbulência em plasmas Processos de colisao em plasmas |
description |
Plasma is an ionized gas inwhich the collective behavior dominates over the individual particle interactions. For this reason, plasma is often treated as collisionless or collision-free. However, the discrete nature of the particles can be important, and often, the description of plasmas is incomplete without properly taking the discrete particle effects into account. The weak turbulence theory is a perturbative nonlinear theory, whose essential formalism was developed in the late 1950s and 1960s and continued on through the early 1980s. However, the standard material found in the literature does not treat the discrete particle effects and the associated fluctuations emitted spontaneously by thermal particles completely. Plasma particles emit electromagnetic fluctuations in all frequencies and wave vectors, but in the standard literature, the fluctuations are approximately treated by considering only those frequency-wave number regimes corresponding to the eigenmodes (or normal modes) satisfying the dispersion relations, while ignoring contributions from noneigenmodes. The present paper shows that the noneigenmode fluctuations modify the particle kinetic equation so that the generalized equation includes the Balescu-L´enard-Landau collision integral and also modify the wave kinetic equation to include not only the collisional damping term but also a term that depicts the bremsstrahlung emission of plasma normal modes. |
publishDate |
2016 |
dc.date.accessioned.fl_str_mv |
2016-05-19T02:09:22Z |
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 |
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article |
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publishedVersion |
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http://hdl.handle.net/10183/141285 |
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1539-3755 |
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000991242 |
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http://hdl.handle.net/10183/141285 |
dc.language.iso.fl_str_mv |
eng |
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eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Physical review. E, Statistical, nonlinear, and soft matter physics. Vol. 93, no. 3 (Mar. 2016), 033203, 29 p. |
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openAccess |
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