Nonlinear mode couplings between geodesic acoustic mode and toroidal Alfven eigenmodes in the EAST tokamak

doi:10.1063/5.0088839

	Nonlinear mode couplings between geodesic acoustic mode and toroidal Alfven eigenmodes in the EAST tokamak
	Zhu, Xiang 1; Zeng, Long 3; Qiu, Zhiyong 2; Lin, Shiyao 3; Zhang, Tao 3; Bao, Jian 4; Hu, Youjun 3; Tang, Tian 3; Liu, Haiqing 3; Kong, Defeng 3
刊名	PHYSICS OF PLASMAS
	2022-06-01
卷号	29
ISSN号	1070-664X
DOI	10.1063/5.0088839
通讯作者	Zeng, Long(zenglong@ipp.ac.cn) ; Qiu, Zhiyong(zqiu@zju.edu.cn)
英文摘要	Multiple toroidal Alfven eigenmodes (TAEs) driven unstable by energetic electrons and a geodesic acoustic mode (GAM) have been successively observed in the Experimental Advanced Superconducting Tokamak (EAST) low-density Ohmic discharges. Nonlinear mode couplings among these modes are conclusively identified. Theoretical analysis suggests that the coupling of simultaneously driven TAEs is the mechanism for GAM excitation. These results experimentally show the potential role of nonlinear mode coupling to the saturation of energetic-particle driven TAE instability, which may nonlinearly transfer energy of energetic particles to bulk plasma and heat fuel ions via low frequency mode such as GAM. Published under an exclusive license by AIP Publishing.
资助项目	National Key R&D Program of China[2017YFE0301205] ; National Key R&D Program of China[2019YFE03040004] ; Youth Innovation Promotion Association of Chinese Academy of Sciences[Y2021116] ; National Natural Science Foundation of China[12075155] ; National Natural Science Foundation of China[12105186] ; Users of Excellence program of Hefei Science Center CAS[2021HSC-UE016]
WOS关键词	INSTABILITY ; PARTICLES ; PROFILE ; WAVES
WOS研究方向	Physics
语种	英语
出版者	AIP Publishing
WOS记录号	WOS:000810499500004
资助机构	National Key R&D Program of China ; Youth Innovation Promotion Association of Chinese Academy of Sciences ; National Natural Science Foundation of China ; Users of Excellence program of Hefei Science Center CAS
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/131295]
专题	中国科学院合肥物质科学研究院
通讯作者	Zeng, Long; Qiu, Zhiyong
作者单位	1.Shenzhen Univ, Adv Energy Res Ctr, Shenzhen 518060, Peoples R China 2.Zhejiang Univ, Inst Fus Theory & Simulat, Dept Phys, Hangzhou 310027, Peoples R China 3.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China 4.Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Zhu, Xiang,Zeng, Long,Qiu, Zhiyong,et al. Nonlinear mode couplings between geodesic acoustic mode and toroidal Alfven eigenmodes in the EAST tokamak[J]. PHYSICS OF PLASMAS,2022,29.
APA	Zhu, Xiang.,Zeng, Long.,Qiu, Zhiyong.,Lin, Shiyao.,Zhang, Tao.,...&Lin, Xiaodong.(2022).Nonlinear mode couplings between geodesic acoustic mode and toroidal Alfven eigenmodes in the EAST tokamak.PHYSICS OF PLASMAS,29.
MLA	Zhu, Xiang,et al."Nonlinear mode couplings between geodesic acoustic mode and toroidal Alfven eigenmodes in the EAST tokamak".PHYSICS OF PLASMAS 29(2022).