About: Interpretation of fast measurements of plasma potential, temperature and density in SOL of ASDEX Upgrade

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	This paper focuses on interpretation of fast (1μs) and local (2–4 mm) measurements of plasma density, potential and electron temperature in the edge plasma of tokamak ASDEX Upgrade. Steady-state radial profiles demonstrate the credibility of the ball-pen probe. We demonstrate that floating potential fluctuations measured by a Langmuir probe are dominated by plasma electron temperature rather than potential. Spatial and temporal scales are found consistent with expectations based on interchange-driven turbulence. Conditionally averaged signals found for both potential and density are also consistent; however, those for temperature show an unexpected 4mm wide decrease by 10% at the very centre of a blob. In the wall shadow, temperature measured by the swept Langmuir probe yields values 10 eV, whilst the ball-pen temperature gradient is more steep and credible, dropping down to 1 eV. This paper focuses on interpretation of fast (1μs) and local (2–4 mm) measurements of plasma density, potential and electron temperature in the edge plasma of tokamak ASDEX Upgrade. Steady-state radial profiles demonstrate the credibility of the ball-pen probe. We demonstrate that floating potential fluctuations measured by a Langmuir probe are dominated by plasma electron temperature rather than potential. Spatial and temporal scales are found consistent with expectations based on interchange-driven turbulence. Conditionally averaged signals found for both potential and density are also consistent; however, those for temperature show an unexpected 4mm wide decrease by 10% at the very centre of a blob. In the wall shadow, temperature measured by the swept Langmuir probe yields values 10 eV, whilst the ball-pen temperature gradient is more steep and credible, dropping down to 1 eV. (en)
Title	Interpretation of fast measurements of plasma potential, temperature and density in SOL of ASDEX Upgrade Interpretation of fast measurements of plasma potential, temperature and density in SOL of ASDEX Upgrade (en)
skos:prefLabel	Interpretation of fast measurements of plasma potential, temperature and density in SOL of ASDEX Upgrade Interpretation of fast measurements of plasma potential, temperature and density in SOL of ASDEX Upgrade (en)
skos:notation	RIV/61389021:_____/10:00348681!RIV11-GA0-61389021
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(7G09042), P(GA202/09/1467), P(KJB100430901), Z(AV0Z20430508)
http://linked.open...iv/cisloPeriodika	10
http://linked.open...vai/riv/dodaniDat	2011
http://linked.open...aciTvurceVysledku	Havlíčková, Eva Horáček, Jan Adámek, Jiří
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	264627
http://linked.open...ai/riv/idVysledku	RIV/61389021:_____/10:00348681
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Ball-pen probe; Langmuir probe; tokamak; plasma; SOL; turbulence; blob; interchange instability; ASDEX Upgrade (en)
http://linked.open.../riv/klicoveSlovo	ASDEX Upgrade SOL Langmuir probe Ball-pen probe plasma tokamak turbulence blob interchange instability
http://linked.open...odStatuVydavatele	AT - Rakouská republika
http://linked.open...ontrolniKodProRIV	[B06D1D4009F7]
http://linked.open...i/riv/nazevZdroje	Nuclear Fusion
http://linked.open...in/vavai/riv/obor	BL
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	9 (xsd:int)
http://linked.open...vavai/riv/projekt	Systematic measurements of the plasma potential and the electron temperature during the L-mode and ELMy H-mode on several large European facilities by using ball-pen probe technique. Joint carrying out by the Contracting Parties of activities within the thematic area %22fusion energy research%22 of the Seventh Community (Euratom) Framework Program Multi-range tomographic system for transport studies in tokamak plasmas
http://linked.open...UplatneniVysledku	2010
http://linked.open...v/svazekPeriodika	50
http://linked.open...iv/tvurceVysledku	Adámek, Jiří Horáček, Jan Havlíčková, Eva Nielsen, A. H. Müller, H. W. Rohde, V. Ionita, C. Mehlmann, F. Seidl, J.
http://linked.open...ain/vavai/riv/wos	000281859300002
http://linked.open...n/vavai/riv/zamer	Physical and chemical processes in plasmas and theis applications
issn	0029-5515
number of pages	9 (xsd:int)

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