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Advantages of the first-derivative probe technique over the three- and four-parameter probe techniques in fusion plasmas diagnostics
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SYSNO ASEP 0489645 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Advantages of the first-derivative probe technique over the three- and four-parameter probe techniques in fusion plasmas diagnostics Author(s) Hasan, E. (BG)
Dimitrova, Miglena (UFP-V) ORCID
Popov, T. (BG)
Ivanova, P. (BG)
Dejarnac, Renaud (UFP-V) RID, ORCID
Stöckel, Jan (UFP-V) RID
Pánek, Radomír (UFP-V) RIDArticle number P04005 Source Title Journal of Instrumentation. - : Institute of Physics Publishing - ISSN 1748-0221
Roč. 13, č. 4 (2018)Number of pages 17 s. Publication form Online - E Language eng - English Country GB - United Kingdom Keywords Plasma potential ; electron temperature ; bi-Maxwellian EEDF ; Divertor Langmuir probes ; three- and four-parameter probe techniques ; first-derivative probe technique Subject RIV BL - Plasma and Gas Discharge Physics OECD category 2.11 Other engineering and technologies R&D Projects LM2015045 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support UFP-V - RVO:61389021 UT WOS 000429055400005 EID SCOPUS 85046650821 DOI 10.1088/1748-0221/13/04/P04005 Annotation In this work, the advantages are presented and discussed of the first-derivative probe technique over the three- and the four-parameter conventional probe techniques for diagnostics of fusion plasmas. The conventional probe techniques for estimation of the plasma potential and the electron temperature and density can only be used when the electron energy distribution function (EEDF) is Maxwellian. The first-derivative probe technique can provide reliable results for the plasma potential and the real EEDF when the latter deviates from Maxwellian. To exemplify the application of the results obtained by different techniques, results on the parallel power-flux density distribution in the divertor region of the COMPASS tokamak, IPP.CR, are presented and discussed. Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2019
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