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Experimental observation of the localized coupling between geodesic acoustic mode and magnetic islands in tokamak plasmas

文献类型：期刊论文

作者Xu, Ming1; Kong, D. F.1; Liu, A. D.2; Liang, Y. F.1; Cai, H. S.2; Qiu, Z. Y.3; Chen, W.4; Shi, T. H.1; Duan, Y. M.1; Xiang, H. M.1
刊名NUCLEAR FUSION
出版日期2021-03-01
卷号61
ISSN号0029-5515
关键词GAM twin counter-propagating BAEs magnetic islands nonlinear interaction
DOI10.1088/1741-4326/abd72d
通讯作者Kong, D. F.(kfkong@ipp.ac.cn) ; Liu, A. D.(lad@ustc.edu.cn)
英文摘要The localized coupling among geodesic acoustic mode (GAM), tearing modes (TMs) and twin counter-propagating beta-induced Alfven eigenmodes (BAEs) waves has been investigated in the experimental advanced superconducting tokamak. Before the appearance of TMs, typical continuous GAM is observed through the multi-channel Doppler backscattering (DBS) diagnostic. The twin BAEs can be excited after the burst of magnetic islands, which are localized to the q = 4 rational surface that is confirmed by the measurement of DBS array, where the GAM and twin BAEs are observed synchronically at R approximate to 2.23 m (normalized radius rho approximate to 0.8). One reasonable excitation mechanism is proposed that the twin BAEs can be excited by the nonlinear interaction between GAM and magnetic islands. As the width of magnetic islands increases, the electromagnetic twin BAEs increase synchronically with the decreasing of electrostatic GAM, strongly suggesting that the electromagnetic components are pumped from three-wave interaction between electrostatic GAM and magnetic islands.
资助项目National Nature Science Foundation of China[11975267] ; National Nature Science Foundation of China[U1967206] ; National Key Research and Development Program of China[2017YFE0300501] ; National Key Research and Development Program of China[2018YFE0304100] ; Institute of Energy, Hefei Comprehensive National Science Center[19KZS205] ; International Partnership Program of Chinese Academy of Sciences[Y16YZ17271] ; Users with Excellence Program of Hefei Science Center CAS[2020HSC-UE008]
WOS研究方向Physics
语种英语
出版者IOP PUBLISHING LTD
WOS记录号WOS:000621472800001
资助机构National Nature Science Foundation of China ; National Key Research and Development Program of China ; Institute of Energy, Hefei Comprehensive National Science Center ; International Partnership Program of Chinese Academy of Sciences ; Users with Excellence Program of Hefei Science Center CAS
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/120469]  
专题中国科学院合肥物质科学研究院
通讯作者Kong, D. F.; Liu, A. D.
作者单位1.Chinese Acad Sci ASIPP, Inst Plasma Phys, Hefei 230031, Peoples R China
2.Univ Sci & Technol China, Sch Nucl Sci & Technol, Hefei 230026, Anhui, Peoples R China
3.Zhejiang Univ, Dept Phys, Hangzhou 310027, Peoples R China
4.Southwestern Inst Phys, POB 432, Chengdu 610041, Peoples R China
推荐引用方式
GB/T 7714		 Xu, Ming,Kong, D. F.,Liu, A. D.,et al. Experimental observation of the localized coupling between geodesic acoustic mode and magnetic islands in tokamak plasmas[J]. NUCLEAR FUSION,2021,61.
APA Xu, Ming.,Kong, D. F..,Liu, A. D..,Liang, Y. F..,Cai, H. S..,...&Wan, B. N..(2021).Experimental observation of the localized coupling between geodesic acoustic mode and magnetic islands in tokamak plasmas.NUCLEAR FUSION,61.
MLA Xu, Ming,et al."Experimental observation of the localized coupling between geodesic acoustic mode and magnetic islands in tokamak plasmas".NUCLEAR FUSION 61(2021).

入库方式： OAI收割

来源：合肥物质科学研究院

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