Tearing modes induced by perpendicular electron cyclotron resonance heating in the KSTAR tokamak

Autor:	Cheonho Bae, B.H. Park, J. W. Yoo, K.I. You, Yong-Su Na, H.H. Lee, J. Kim, M. Joung, J. Seol, S.G. Lee, H.S. Kim, M.H. Woo, A.Y. Aydemir
Rok vydání:	2014
Předmět:	Nuclear and High Energy Physics Materials science Tokamak Rational surface Resonance Plasma Condensed Matter Physics Electron cyclotron resonance law.invention Physics::Plasma Physics law KSTAR Physics::Space Physics Tearing Perpendicular Atomic physics
Zdroj:	Nuclear Fusion. 54:103008
ISSN:	1741-4326 0029-5515
DOI:	10.1088/0029-5515/54/10/103008
Popis:	This paper reports on experimental evidence that shows perpendicular electron cyclotron resonance heating (ECRH) can trigger classical tearing modes when deposited near a rational flux surface. The complex evolution of an m = 2 island is followed during current ramp-up in KSTAR plasmas, from its initial onset as the rational surface enters the ECRH resonance layer to its eventual lock on the wall after the rational surface leaves the layer. Stability analysis coupled to a transport calculation of the current profile with ECRH shows that the perpendicular ECRH may play a significant role in triggering and destabilizing classical m = 2 tearing modes, in agreement with our experimental observation.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1b0b52c13d51df6fcd2962abaee29a59 https://doi.org/10.1088/0029-5515/54/10/103008 Zobrazit plný text záznamu