Počet záznamů: 1
Physics of the electric field in the scrape-off layer in ASDEX Upgrade L-mode discharges and comparison to experiments
- 1.
SYSNO ASEP 0563273 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Physics of the electric field in the scrape-off layer in ASDEX Upgrade L-mode discharges and comparison to experiments Tvůrce(i) Brida, D. (DE)
Conway, G.D. (DE)
Adámek, Jiří (UFP-V) RID, ORCID
Silvagni, D. (DE)
David, P. (DE)
Eich, T. (DE)
Grenfell, G. (DE)
Komm, Michael (UFP-V) RID, ORCID
Plank, U. (DE)Celkový počet autorů 9 Číslo článku 101262 Zdroj.dok. Nuclear Materials and Energy. - : Elsevier
Roč. 33, October (2022)Poč.str. 7 s. Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova ASDEX Upgrade ; Electric field ; sol Vědní obor RIV BL - Fyzika plazmatu a výboje v plynech Obor OECD Fluids and plasma physics (including surface physics) Způsob publikování Open access Institucionální podpora UFP-V - RVO:61389021 UT WOS 000868495300001 EID SCOPUS 85139591318 DOI 10.1016/j.nme.2022.101262 Anotace The electric field in the Scrape-Off Layer (SOL) of fusion plasmas is a key quantity affecting the local plasma transport and possibly also the overall plasma confinement. However, the physics determining the SOL electric field is experimentally not well investigated. In this study a systematic experimental analysis of the electric field in AUG L-mode discharges at various plasma currents, densities and heating powers is presented. In particular, the relation of the electric field to the divertor condition, as measured by Langmuir probes, is analyzed in detail by applying a simplified form of Ohm's law. The analysis shows that the peak value of the radial electric field E-r in the near SOL measured by Doppler reflectometry decreases from about 8 kV/m at the lowest densities to2 kV/m at the highest densities, which is accompanied by a flattening of the outer divertor target electron temperature profiles. The electric field obtained by integrating Ohm's law from the divertor target to the midplane agrees with E-r in the near SOL within the uncertainties, evidencing the quantitative validity of the underlying model. Based on the findings about the relation between the electric field and the target conditions, a scaling to obtain the maximum of E-r in the SOL in terms of upstream parameters is developed. Pracoviště Ústav fyziky plazmatu Kontakt Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Rok sběru 2023 Elektronická adresa https://www.sciencedirect.com/science/article/pii/S2352179122001430?via%3Dihub
Počet záznamů: 1