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Measurements of scrape-off layer ion-to-electron temperature ratio in Tore Supra ohmic plasmas
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SYSNO ASEP 0355653 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Measurements of scrape-off layer ion-to-electron temperature ratio in Tore Supra ohmic plasmas Author(s) Kočan, M. (FR)
Gunn, J. P. (FR)
Pascal, J.-Y. (FR)
Bonhomme, G. (FR)
Devynck, P. (FR)
Ďuran, Ivan (UFP-V) RID, ORCID
Gauthier, E. (FR)
Ghendrih, P. (FR)
Marandet, Y. (FR)
Pegourie, B. (FR)
Vallet, J.-C. (FR)Source Title Journal of Nuclear Materials. - : Elsevier - ISSN 0022-3115
390-391, - (2009), s. 1074-1077Number of pages 4 s. Publication form web - web Action International Conference on Plasma-Surface Interactions in Controlled Fusion Devices/18th./ Event date 26.05.2008-30.05. 2008 VEvent location Toledo Country ES - Spain Event type WRD Language eng - English Country NL - Netherlands Keywords Ion temperature ; Electron temperature ; Edge plasma ; Tore Supra Subject RIV BG - Nuclear, Atomic and Molecular Physics, Colliders CEZ AV0Z20430508 - UFP-V (2005-2011) UT WOS 000267747300248 DOI 10.1016/j.jnucmat.2009.01.294 Annotation The scrape-off layer (SOL) ion (Ti) and electron (Te) temperatures were measured in ohmic plasmas of the Tore Supra tokamak for a wide range of main plasma parameters. Ti increases strongly with the intensity of the toroidal magnetic field Bt, whereas Te is nearly unaffected. The ion-to-electron temperature ratio tau= Ti/Te ~ Bt2.5 and is a weak function of plasma density and plasma current. Close to the last closed flux surface tau = 2->6 so that equipartition is never reached. The SOL ion temperature e-folding length is about 30% greater than the electron temperature e-folding length meaning that tau increases with radius in the SOL. Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2011
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