Experimental identification of nonlinear coupling between (intermediate, small)-scale microturbulence and an MHD mode in the core of a superconducting tokamak

doi:10.1088/1741-4326/aa8a91

CORC > 合肥物质科学研究院 > 中国科学院合肥物质科学研究院 > 中科院等离子体物理研究所

	Experimental identification of nonlinear coupling between (intermediate, small)-scale microturbulence and an MHD mode in the core of a superconducting tokamak
	Sun, P. J.2; Li, Y. D.2; Ren, Y.1; Zhang, X. D.2; Wu, G. J.2; Xu, L. Q.2; Chen, R.2; Li, Q.3; Zhao, H. L.2; Zhang, J. Z.2
刊名	NUCLEAR FUSION
	2018
卷号	58 期号:1 页码:8
关键词	nonlinear coupling multi-scale density fluctuation microturbulence
ISSN号	0029-5515
DOI	10.1088/1741-4326/aa8a91
英文摘要	In this paper, we present clear experimental evidence of core region nonlinear coupling between (intermediate, small)-scale microturbulence and an magnetohydrodynamics (MHD) mode during the current ramp-down phase in a set of L-mode plasma discharges in the experimental advanced superconducting tokamak (EAST, Wan et al (2006 Plasma Sci. Technol. 8 253)). Density fluctuations of broadband microturbulence (k perpendicular to rho(i) similar to 2-5.2)and the MHD mode (toroidal mode number m = -1, poloidal mode number n = 1) are measured simultaneously, using a four-channel tangential CO2 laser collective scattering diagnostic in core plasmas. The nonlinear coupling between the broadband microturbulence and the MHD mode is directly demonstrated by showing a statistically significant bicoherence and modulation of turbulent density fluctuation amplitude by the MHD mode.
资助项目	National Magnetic Confinement Fusion Science Program of China[2015GB101000] ; National Natural Science Foundation of China[11575235] ; National Natural Science Foundation of China[11505228] ; National Natural Science Foundation of China[10975159] ; National Natural Science Foundation of China[11275232] ; National Natural Science Foundation of China[11575238] ; National Natural Science Foundation of China[11422546] ; National Key Development Project[2016YFA0400600] ; Science Foundation of ASIPP[Y45ETY2307]
WOS关键词	SCALE TURBULENCE ; TEARING MODES ; ZONAL FLOWS ; PLASMA ; TRANSPORT ; SCATTERING ; WAVES
WOS研究方向	Physics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000414270300003
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/34839]
专题	合肥物质科学研究院_中科院等离子体物理研究所
通讯作者	Sun, P. J.
作者单位	1.Princeton Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA 2.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Anhui, Peoples R China 3.Guangdong Univ Technol, Guangzhou 510006, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Sun, P. J.,Li, Y. D.,Ren, Y.,et al. Experimental identification of nonlinear coupling between (intermediate, small)-scale microturbulence and an MHD mode in the core of a superconducting tokamak[J]. NUCLEAR FUSION,2018,58(1):8.
APA	Sun, P. J..,Li, Y. D..,Ren, Y..,Zhang, X. D..,Wu, G. J..,...&Li, J..(2018).Experimental identification of nonlinear coupling between (intermediate, small)-scale microturbulence and an MHD mode in the core of a superconducting tokamak.NUCLEAR FUSION,58(1),8.
MLA	Sun, P. J.,et al."Experimental identification of nonlinear coupling between (intermediate, small)-scale microturbulence and an MHD mode in the core of a superconducting tokamak".NUCLEAR FUSION 58.1(2018):8.