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Plasma Potential and Electron Energy Distribution Function Measured by Vertical Reciprocating Langmuir Probe in the COMPASS Tokamak Edge Plasma(IWSSPP2012)
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SYSNO ASEP 0388406 Document Type O - Others R&D Document Type Others Title Plasma Potential and Electron Energy Distribution Function Measured by Vertical Reciprocating Langmuir Probe in the COMPASS Tokamak Edge Plasma(IWSSPP2012) Author(s) Dimitrova, Miglena (UFP-V) ORCID
Horáček, Jan (UFP-V) RID, ORCID
Popov, Tsv.K. (BG)
Stöckel, Jan (UFP-V) RID
Dejarnac, Renaud (UFP-V) RID, ORCID
Bílková, Petra (UFP-V) RID
Havlíček, Josef (UFP-V) RID, ORCID
Janky, Filip (UFP-V) RID
Ivanova, P. (BG)
Kotseva, I. (BG)Number of authors 10 Year of issue 2012 Language eng - English Country BG - Bulgaria Keywords vertical reciprocating probe ; tokamak edge plasma ; plasma potential ; electron energy distribution function ; first-derivative probe method Subject RIV BL - Plasma and Gas Discharge Physics R&D Projects LM2011021 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) CEZ AV0Z20430508 - UFP-V (2005-2011) Annotation Předneseno na:5th International Workshop and Summer School on Plasma Physics, Kiten,BG,25.06-30.06.2012, Langmuir probes (LP)allow local measurements of the plasma potential, the charged particles density and the electron energy distribution function (EEDF). The knowledge of the real EEDF is of great importance in understanding the underlying physics of processes occurring at the plasma edge in tokamaks, such as the formation of transport barriers, plasma–wall interactions, and edge plasma turbulence. In magnetized plasma, the electron part of the IV characteristics is distorted due to the influence of the magnetic field. This is why the kinetic theory developed in the non-local approach may be used for the evaluation of the EEDF from the first-derivative of the electron current of the IV characteristics. In this work we present the first results for the evaluation of the EEDFs by using data obtained by a vertical reciprocating probe at the edge plasma area of the COMPASS tokamak Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2013
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