About: Dynamics of the edge transport barrier at plasma biasing on the CASTOR tokamak

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	A clear and reproducible transition to a regime with an improved particle confinement is routinely observed on the CASTOR tokamak, if the biasing electrode is inserted deep enough into the plasma (r/a ~ 0.5) and biased up to +250V. The steepening of the radial profiles of the plasma density and potential demonstrate the formation of a transport barrier just inside the last closed flux surface. Fast relaxations of the edge plasma parameters, with a frequency of about 10 kHz, are observed when the average radial electric field within the barrier prevailes values of about 20 kV/m. A detailed analysis of the spatial-temporal behavior of these relaxations is presented. A clear and reproducible transition to a regime with an improved particle confinement is routinely observed on the CASTOR tokamak, if the biasing electrode is inserted deep enough into the plasma (r/a ~ 0.5) and biased up to +250V. The steepening of the radial profiles of the plasma density and potential demonstrate the formation of a transport barrier just inside the last closed flux surface. Fast relaxations of the edge plasma parameters, with a frequency of about 10 kHz, are observed when the average radial electric field within the barrier prevailes values of about 20 kV/m. A detailed analysis of the spatial-temporal behavior of these relaxations is presented. (en) Zřejmý a reprodukovatelný přechod do režimu se zlepšeným udržením je rutinně pozorován na tokamaku CASTOR, jestliže je nabíjecí elektroda vnořena dostatečně hluboko do plazmatu (r/a ~ 0.5) a nabita na +250 V. Zvýšený gradient hustoty a potenciálu plazmatu demonstruje formování transportní bariery právě uvnitř posledního uzavřeného magnetického povrchu. Rychlé relaxace parametrů okrajového plazmatu, s frekvencí okolo 10 kHz se pozorují když radiální elektrické pole uvnitř bariéry je vyšší než 20 kV/m. V práci se detailně analyzuje časoprostorové chování těchto relaxačních oscilací (cs)
Title	Dynamics of the edge transport barrier at plasma biasing on the CASTOR tokamak Dynamika okrajové transportní bariéry při nabíjení plazmatu na tokamaku CASTOR (cs) Dynamics of the edge transport barrier at plasma biasing on the CASTOR tokamak (en)
skos:prefLabel	Dynamics of the edge transport barrier at plasma biasing on the CASTOR tokamak Dynamika okrajové transportní bariéry při nabíjení plazmatu na tokamaku CASTOR (cs) Dynamics of the edge transport barrier at plasma biasing on the CASTOR tokamak (en)
skos:notation	RIV/61389021:_____/06:00079077!RIV07-AV0-61389021
http://linked.open.../vavai/riv/strany	19;23
http://linked.open...avai/riv/aktivita	Z
http://linked.open...avai/riv/aktivity	Z(AV0Z20430508)
http://linked.open...iv/cisloPeriodika	6
http://linked.open...vai/riv/dodaniDat	2007
http://linked.open...aciTvurceVysledku	Pánek, Radomír Stöckel, Jan Horáček, Jan Hron, Martin Ďuran, Ivan Brotánková, Jana Dejarnac, Renaud
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav fyziky plazmatu AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	472688
http://linked.open...ai/riv/idVysledku	RIV/61389021:_____/06:00079077
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	tokamak; plasma; transport barrier; relaxations (en)
http://linked.open.../riv/klicoveSlovo	relaxations plasma tokamak transport barrier
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[F098AAEDA4B3]
http://linked.open...i/riv/nazevZdroje	Problems of Atomic Science and Technology
http://linked.open...in/vavai/riv/obor	BL
http://linked.open...ichTvurcuVysledku	7 (xsd:int)
http://linked.open...cetTvurcuVysledku	15 (xsd:int)
http://linked.open...UplatneniVysledku	2006
http://linked.open...v/svazekPeriodika	12
http://linked.open...iv/tvurceVysledku	Horáček, Jan Pánek, Radomír Stöckel, Jan Hron, Martin Dejarnac, Renaud Gunn, J. P. Ďuran, Ivan Brotánková, Jana Martines, E. Spolaore, M. Devynck, P. Kocan, M. Van Oost, G. Sharma, A. Peleman, P.
http://linked.open...n/vavai/riv/zamer	Physical and chemical processes in plasmas and theis applications
issn	1562-6016
number of pages	6 (xsd:int)
is http://linked.open...avai/riv/vysledek of	Dynamics of the edge transport barrier at plasma biasing on the CASTOR tokamak Dynamics of the edge transport barrier at plasma biasing on the CASTOR tokamak

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