Efficiency of LH+EC current drive in tokamaks featuring an internal transport barrier
Autor(a) principal: | |
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Data de Publicação: | 2005 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Brazilian Journal of Physics |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332005000400015 |
Resumo: | In the present paper we study the effects due to the occurrence of radial transport of particles in a tokamak on the efficiency of current drive due to combined action of lower hybrid waves and electron cyclotron waves, in the presence of an internal transport barrier. The results are obtained by numerical solution of the Fokker-Planck equation which rules the evolution of the electron distribution function. We assume that the radial transport of particles can be due to magnetic or to electrostatic fluctuations, and compare the two situations. In both cases the efficiency of current drive is shown to increase with the increase of the fluctuations which originate the transport. The current drive efficiency is shown to depend weakly on the radial position of the barrier, with a slightly more pronounced dependence in the case of magnetic fluctuations. |
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Brazilian Journal of Physics |
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Efficiency of LH+EC current drive in tokamaks featuring an internal transport barrierIn the present paper we study the effects due to the occurrence of radial transport of particles in a tokamak on the efficiency of current drive due to combined action of lower hybrid waves and electron cyclotron waves, in the presence of an internal transport barrier. The results are obtained by numerical solution of the Fokker-Planck equation which rules the evolution of the electron distribution function. We assume that the radial transport of particles can be due to magnetic or to electrostatic fluctuations, and compare the two situations. In both cases the efficiency of current drive is shown to increase with the increase of the fluctuations which originate the transport. The current drive efficiency is shown to depend weakly on the radial position of the barrier, with a slightly more pronounced dependence in the case of magnetic fluctuations.Sociedade Brasileira de Física2005-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332005000400015Brazilian Journal of Physics v.35 n.3a 2005reponame:Brazilian Journal of Physicsinstname:Sociedade Brasileira de Física (SBF)instacron:SBF10.1590/S0103-97332005000400015info:eu-repo/semantics/openAccessRosa,P. R. da S.Ziebell,L. F.Oliveira,C. I. deJardim,G. N.Bonfim,A. K.eng2005-10-13T00:00:00Zoai:scielo:S0103-97332005000400015Revistahttp://www.sbfisica.org.br/v1/home/index.php/pt/ONGhttps://old.scielo.br/oai/scielo-oai.phpsbfisica@sbfisica.org.br||sbfisica@sbfisica.org.br1678-44480103-9733opendoar:2005-10-13T00:00Brazilian Journal of Physics - Sociedade Brasileira de Física (SBF)false |
dc.title.none.fl_str_mv |
Efficiency of LH+EC current drive in tokamaks featuring an internal transport barrier |
title |
Efficiency of LH+EC current drive in tokamaks featuring an internal transport barrier |
spellingShingle |
Efficiency of LH+EC current drive in tokamaks featuring an internal transport barrier Rosa,P. R. da S. |
title_short |
Efficiency of LH+EC current drive in tokamaks featuring an internal transport barrier |
title_full |
Efficiency of LH+EC current drive in tokamaks featuring an internal transport barrier |
title_fullStr |
Efficiency of LH+EC current drive in tokamaks featuring an internal transport barrier |
title_full_unstemmed |
Efficiency of LH+EC current drive in tokamaks featuring an internal transport barrier |
title_sort |
Efficiency of LH+EC current drive in tokamaks featuring an internal transport barrier |
author |
Rosa,P. R. da S. |
author_facet |
Rosa,P. R. da S. Ziebell,L. F. Oliveira,C. I. de Jardim,G. N. Bonfim,A. K. |
author_role |
author |
author2 |
Ziebell,L. F. Oliveira,C. I. de Jardim,G. N. Bonfim,A. K. |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Rosa,P. R. da S. Ziebell,L. F. Oliveira,C. I. de Jardim,G. N. Bonfim,A. K. |
description |
In the present paper we study the effects due to the occurrence of radial transport of particles in a tokamak on the efficiency of current drive due to combined action of lower hybrid waves and electron cyclotron waves, in the presence of an internal transport barrier. The results are obtained by numerical solution of the Fokker-Planck equation which rules the evolution of the electron distribution function. We assume that the radial transport of particles can be due to magnetic or to electrostatic fluctuations, and compare the two situations. In both cases the efficiency of current drive is shown to increase with the increase of the fluctuations which originate the transport. The current drive efficiency is shown to depend weakly on the radial position of the barrier, with a slightly more pronounced dependence in the case of magnetic fluctuations. |
publishDate |
2005 |
dc.date.none.fl_str_mv |
2005-09-01 |
dc.type.driver.fl_str_mv |
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://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332005000400015 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332005000400015 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0103-97332005000400015 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Física |
publisher.none.fl_str_mv |
Sociedade Brasileira de Física |
dc.source.none.fl_str_mv |
Brazilian Journal of Physics v.35 n.3a 2005 reponame:Brazilian Journal of Physics instname:Sociedade Brasileira de Física (SBF) instacron:SBF |
instname_str |
Sociedade Brasileira de Física (SBF) |
instacron_str |
SBF |
institution |
SBF |
reponame_str |
Brazilian Journal of Physics |
collection |
Brazilian Journal of Physics |
repository.name.fl_str_mv |
Brazilian Journal of Physics - Sociedade Brasileira de Física (SBF) |
repository.mail.fl_str_mv |
sbfisica@sbfisica.org.br||sbfisica@sbfisica.org.br |
_version_ |
1754734862194966528 |