Počet záznamů: 1
Bi-Maxwellian electron energy distribution function in the vicinity of the last closed flux surface in fusion plasma
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SYSNO ASEP 0453276 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Bi-Maxwellian electron energy distribution function in the vicinity of the last closed flux surface in fusion plasma Tvůrce(i) Popov, T.S.V.K. (BG)
Dimitrova, Miglena (UFP-V) ORCID
Pedrosa, M. A. (ES)
López-Bruna, D. (ES)
Horáček, Jan (UFP-V) RID, ORCID
Kovačič, J. (SI)
Dejarnac, Renaud (UFP-V) RID, ORCID
Stöckel, Jan (UFP-V) RID
Aftanas, Milan (UFP-V) RID
Böhm, Petr (UFP-V) RID
Bílková, Petra (UFP-V) RID
Hidalgo, C. (ES)
Pánek, Radomír (UFP-V) RIDČíslo článku 115011 Zdroj.dok. Plasma Physics and Controlled Fusion. - : Institute of Physics Publishing - ISSN 0741-3335
Roč. 57, č. 11 (2015)Poč.str. 12 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova COMPASS tokamak, parallel power flux density ; TJ-II stellarator ; bi-Maxwellian EEDF ; last closed flux surface ; SOL ; parallel power flux density Vědní obor RIV BL - Fyzika plazmatu a výboje v plynech Obor OECD Fluids and plasma physics (including surface physics) CEP GAP205/12/2327 GA ČR - Grantová agentura ČR LM2011021 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Institucionální podpora UFP-V - RVO:61389021 UT WOS 000374538100012 EID SCOPUS 84945549134 DOI 10.1088/0741-3335/57/11/115011 Anotace The first-derivative probe technique was applied to derive data for plasma parameters from the IV Langmuir probe characteristics measured in the plasma boundary region in the COMPASS tokamak and in the TJ-II stellarator. It is shown that in the COMPASS tokamak in the vicinity of the last closed flux surface (LCFS) the electron energy distribution function (EEDF) is bi-Maxwellian with the low-temperature electron fraction predominating over the higher temperature one, whereas in the far scrape-off layer (SOL) the EEDF is Maxwellian. The mechanism for the appearance of a bi-Maxwellian EEDF in the vicinity of the LCFS is discussed. The comparison of the results from probe measurements with ASTRA package and EIRENE code calculations suggests that the main reason of the appearance of a bi-Maxwellian EEDF in the vicinity of the LCFS is the ionization of the neutral atoms. It is shown that in the SOL the radial distribution of the parallel power flux density is a double exponential. Pracoviště Ústav fyziky plazmatu Kontakt Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Rok sběru 2016
Počet záznamů: 1