Slow down of a globally neutral relativistic e- e+ beam shearing the vacuum
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10071/10531 |
Resumo: | The microphysics of relativistic collisionless shear flows is investigated in a configuration consisting of a globally neutral, relativistic ee+ beam streaming through a hollow plasma/dielectric channel. We show through multidimensional particle-in-cell simulations that this scenario excites the mushroom instability (MI), a transverse shear instability on the electronscale, when there is no overlap (no contact) between the e+ beam and the walls of the hollow plasma channel. The onset of the MI leads to the conversion of the beams kinetic energy into magnetic (and electric) field energy, effectively slowing down a globally neutral body in the absence of contact. The collisionless shear physics explored in this configuration may operate in astrophysical environments, particularly in highly relativistic and supersonic settings where macroscopic shear processes are stable. |
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spelling |
Slow down of a globally neutral relativistic e- e+ beam shearing the vacuumKinetic-scaleNon-contact frictionParticle-in-cellPlasma instabilitiesSheared flowsThe microphysics of relativistic collisionless shear flows is investigated in a configuration consisting of a globally neutral, relativistic ee+ beam streaming through a hollow plasma/dielectric channel. We show through multidimensional particle-in-cell simulations that this scenario excites the mushroom instability (MI), a transverse shear instability on the electronscale, when there is no overlap (no contact) between the e+ beam and the walls of the hollow plasma channel. The onset of the MI leads to the conversion of the beams kinetic energy into magnetic (and electric) field energy, effectively slowing down a globally neutral body in the absence of contact. The collisionless shear physics explored in this configuration may operate in astrophysical environments, particularly in highly relativistic and supersonic settings where macroscopic shear processes are stable.IOP Publishing Ltd2016-01-05T11:37:09Z2016-01-01T00:00:00Z20162019-04-05T16:58:21Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10071/10531eng0741-333510.1088/0741-3335/58/1/014025Alves, E. P.Grismayer, T.Silveirinha, M. G.Fonseca, R. A.Silva, L. O.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-11-09T17:35:21Zoai:repositorio.iscte-iul.pt:10071/10531Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T22:16:00.037665Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Slow down of a globally neutral relativistic e- e+ beam shearing the vacuum |
title |
Slow down of a globally neutral relativistic e- e+ beam shearing the vacuum |
spellingShingle |
Slow down of a globally neutral relativistic e- e+ beam shearing the vacuum Alves, E. P. Kinetic-scale Non-contact friction Particle-in-cell Plasma instabilities Sheared flows |
title_short |
Slow down of a globally neutral relativistic e- e+ beam shearing the vacuum |
title_full |
Slow down of a globally neutral relativistic e- e+ beam shearing the vacuum |
title_fullStr |
Slow down of a globally neutral relativistic e- e+ beam shearing the vacuum |
title_full_unstemmed |
Slow down of a globally neutral relativistic e- e+ beam shearing the vacuum |
title_sort |
Slow down of a globally neutral relativistic e- e+ beam shearing the vacuum |
author |
Alves, E. P. |
author_facet |
Alves, E. P. Grismayer, T. Silveirinha, M. G. Fonseca, R. A. Silva, L. O. |
author_role |
author |
author2 |
Grismayer, T. Silveirinha, M. G. Fonseca, R. A. Silva, L. O. |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Alves, E. P. Grismayer, T. Silveirinha, M. G. Fonseca, R. A. Silva, L. O. |
dc.subject.por.fl_str_mv |
Kinetic-scale Non-contact friction Particle-in-cell Plasma instabilities Sheared flows |
topic |
Kinetic-scale Non-contact friction Particle-in-cell Plasma instabilities Sheared flows |
description |
The microphysics of relativistic collisionless shear flows is investigated in a configuration consisting of a globally neutral, relativistic ee+ beam streaming through a hollow plasma/dielectric channel. We show through multidimensional particle-in-cell simulations that this scenario excites the mushroom instability (MI), a transverse shear instability on the electronscale, when there is no overlap (no contact) between the e+ beam and the walls of the hollow plasma channel. The onset of the MI leads to the conversion of the beams kinetic energy into magnetic (and electric) field energy, effectively slowing down a globally neutral body in the absence of contact. The collisionless shear physics explored in this configuration may operate in astrophysical environments, particularly in highly relativistic and supersonic settings where macroscopic shear processes are stable. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-01-05T11:37:09Z 2016-01-01T00:00:00Z 2016 2019-04-05T16:58:21Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10071/10531 |
url |
http://hdl.handle.net/10071/10531 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
0741-3335 10.1088/0741-3335/58/1/014025 |
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.publisher.none.fl_str_mv |
IOP Publishing Ltd |
publisher.none.fl_str_mv |
IOP Publishing Ltd |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
|
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1799134718027890688 |