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Statements

Subject Item
n2:RIV%2F61389021%3A_____%2F10%3A00348681%21RIV11-GA0-61389021
rdf:type
skos:Concept n18:Vysledek
dcterms: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.
dcterms: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
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
skos:notation
RIV/61389021:_____/10:00348681!RIV11-GA0-61389021
n3:aktivita
n16:P n16:Z
n3:aktivity
P(7G09042), P(GA202/09/1467), P(KJB100430901), Z(AV0Z20430508)
n3:cisloPeriodika
10
n3:dodaniDat
n4:2011
n3:domaciTvurceVysledku
n5:2956586 n5:3033066 n5:8320039
n3:druhVysledku
n8:J
n3:duvernostUdaju
n17:S
n3:entitaPredkladatele
n13:predkladatel
n3:idSjednocenehoVysledku
264627
n3:idVysledku
RIV/61389021:_____/10:00348681
n3:jazykVysledku
n10:eng
n3:klicovaSlova
Ball-pen probe; Langmuir probe; tokamak; plasma; SOL; turbulence; blob; interchange instability; ASDEX Upgrade
n3:klicoveSlovo
n7:Langmuir%20probe n7:blob n7:Ball-pen%20probe n7:SOL n7:plasma n7:interchange%20instability n7:tokamak n7:ASDEX%20Upgrade n7:turbulence
n3:kodStatuVydavatele
AT - Rakouská republika
n3:kontrolniKodProRIV
[B06D1D4009F7]
n3:nazevZdroje
Nuclear Fusion
n3:obor
n15:BL
n3:pocetDomacichTvurcuVysledku
3
n3:pocetTvurcuVysledku
9
n3:projekt
n11:GA202%2F09%2F1467 n11:7G09042 n11:KJB100430901
n3:rokUplatneniVysledku
n4:2010
n3:svazekPeriodika
50
n3:tvurceVysledku
Adámek, Jiří Nielsen, A. H. Müller, H. W. Seidl, J. Ionita, C. Rohde, V. Horáček, Jan Mehlmann, F. Havlíčková, Eva
n3:wos
000281859300002
n3:zamer
n6:AV0Z20430508
s:issn
0029-5515
s:numberOfPages
9