Radial electric field evolution in the vicinity of a rotating magnetic island in the TUMAN-3M tokamak

Autor:	S. V. Lebedev, V. A. Kornev, M. I. Vildjunas, L. G. Askinazi, V. E. Golant, N. A. Zhubr, A. S. Tukachinsky
Rok vydání:	2006
Předmět:	Physics Tokamak Toroid Magnetic confinement fusion Fluid mechanics Plasma Condensed Matter Physics Rotation law.invention Computational physics Nuclear Energy and Engineering Physics::Plasma Physics law Electric field Atomic physics Magnetohydrodynamics
Zdroj:	Plasma Physics and Controlled Fusion. 48:A85-A91
ISSN:	1361-6587 0741-3335
DOI:	10.1088/0741-3335/48/5a/s07
Popis:	Radial electric field is known to be an important factor affecting transport and confinement in toroidal fusion plasmas. Langmuire probe measurements of peripheral radial electric field evolution in the presence of a rotating MHD island were performed on the TUMAN-3M tokamak in order to clear up the possible connection between the radial electric field and the island rotation, both in L and H-modes. The measurements showed that Er became positive, if the island was large enough, in spite of the constant direction of the island's rotation. Comparing similar ohmic H-mode discharges with or without a rotating MHD island, it was found that in the presence of the large island Er was always more positive. Possible explanations of this observation are discussed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b28fed222f859ce97b8eab0c00c38d02 https://doi.org/10.1088/0741-3335/48/5a/s07 Zobrazit plný text záznamu