Počet záznamů: 1
Interpretation of fast measurements of plasma potential, temperature and density in SOL of ASDEX Upgrade
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SYSNO ASEP 0348681 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Interpretation of fast measurements of plasma potential, temperature and density in SOL of ASDEX Upgrade Tvůrce(i) Horáček, Jan (UFP-V) RID, ORCID
Adámek, Jiří (UFP-V) RID, ORCID
Müller, H. W. (DE)
Seidl, J. (CZ)
Nielsen, A.H. (DK)
Rohde, V. (DE)
Mehlmann, F. (AT)
Ionita, C. (AT)
Havlíčková, Eva (UFP-V)Zdroj.dok. Nuclear Fusion. - : Institute of Physics Publishing - ISSN 0029-5515
Roč. 50, č. 10 (2010), s. 105001-105001Poč.str. 9 s. Forma vydání web - web Jazyk dok. eng - angličtina Země vyd. AT - Rakousko Klíč. slova Ball-pen probe ; Langmuir probe ; tokamak ; plasma ; SOL ; turbulence ; blob ; interchange instability ; ASDEX Upgrade Vědní obor RIV BL - Fyzika plazmatu a výboje v plynech CEP KJB100430901 GA AV ČR - Akademie věd GA202/09/1467 GA ČR - Grantová agentura ČR 7G09042 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy CEZ AV0Z20430508 - UFP-V (2005-2011) UT WOS 000281859300002 DOI 10.1088/0029-5515/50/10/105001 Anotace 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. Pracoviště Ústav fyziky plazmatu Kontakt Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Rok sběru 2011
Počet záznamů: 1