文献类型：期刊文献

英文题名：Destabilization of reversed shear Alfvén eigenmodes driven by energetic ions during NBI in HL-2A plasmas with qmin～1

作者：Chen, W.[1]; Yu, Limin[2]; Liu, Yi.[1]; Ding, X.T.[1]; Xie, H.S.[3]; Zhu, J.[3]; Yu, L.M.[1]; Ji, X.Q.[1]; Li, J.X.[1]; Li, Y.G.[1]; Yu, D.L.[1]; Shi, Z.B.[1]; Song, X.M.[1]; Cao, J.Y.[1]; Song, S.D.[1]; Dong, Y.B.[1]; Zhong, W.L.[1]; Jiang, M.[1]; Cui, Z.Y.[1]; Huang, Y.[1]; Zhou, Y.[1]; Dong, J.Q.[1]; Xu, M.[1]; Xia, F.[1]; Yan, L.W.[1]; Yang, Q.W.[1]; Duan, X.R.[1]

机构：[1] Southwestern Institute of Physics, PO Box 432, Chengdu, 610041, China; [2] Department of Physics, East China University of Science and Technology, PO Box 385, Shanghai, 200237, China; [3] Institute for Fusion Theory and Simulation, Zhejiang University, Hangzhou, 310027, China

年份：2014

卷号：54

期号：10

外文期刊名：Nuclear Fusion

收录：EI(收录号：20144300120930)

语种：英文

外文关键词：Magnetohydrodynamics - Magnetoplasma

摘要：Two groups of frequency sweeping modes are observed and interpreted in the HL-2A plasmas with qmin～1. The tokamak simulation code calculations indicate the presence of a reversed shear q-profile during the existence of these modes. The mode frequencies lie in between TAE and BAE frequencies, i.e. ωBAETAE, and these modes are highly localized near qmin, i.e. r/a～0.25. A group of modes characterized by down-sweeping frequency with qmin decrease due to qmin>1 and nqmin-m>0, and another group of modes characterized by up-sweeping frequency with qmin drop, owing to qminmin-m ? 2014 IAEA, Vienna.