Exciting and propagating characteristics of two coexisting kinetic geodesic acoustic modes in the edge of plasma

doi:10.1088/1741-4326/aa5c62

	Exciting and propagating characteristics of two coexisting kinetic geodesic acoustic modes in the edge of plasma
	Kong, D. F.1,2; Liu, A. D.2; Lan, T.2; Yu, C. X.2; Cheng, J.3; Qiu, Z. Y.5; Zhao, H. L.1,2; Shen, H. G.2; Yan, L. W.3; Dong, J. Q.3; Xu, M.3 ; Zhao, K. J.3; Duan, X. R.3; Liu, Y.3 ; Chen, R.1 ; Zhang, S. B.1; Sun, X.2; Xie, J. L.2; Li, H.2 ; Liu, W. D.2
	2017-04-01
发表期刊	NUCLEAR FUSION
摘要	Coexisting dual kinetic geodesic acoustic modes (KGAMs) with similar characteristics have been observed with Langmuir probe arrays in the edge plasma of HL-2A tokamak with low density Ohmic discharge. The dual KGAMs are named a low-frequency GAM (LFGAM) and a high-frequency GAM (HFGAM), respectively. By changing the line averaged density from 1.0 x 10(19) m(-3) to 0.7 x 10(19) m(-3), the study of ne and Te profiles indicate that collision damping rate plays a crucial role on exciting of dual KGAMs, especially for the higher frequency branch (HFGAM). With the application of modulating techniques, we provide direct proof that nonlinear interactions between GAMs and ambient turbulence (AT) show great difference at different radial positions. At the exciting position of GAM, the amplitude modulation of AT is dominant, indicating that GAM is generated in the energy-conserving triad interaction. After the exciting of GAMs, they will propagate both inward and outward. During the propagation, the phase modulation of AT is dominant, GAMs can rarely gain energy from AT, yet they can give back-reactions on AT through shearing effect.
文章类型	Article
关键词	Zonal Flow Kinetic Gam Ambient Turbulence
WOS标题词	Science & Technology ; Physical Sciences
DOI	10.1088/1741-4326/aa5c62
关键词[WOS]	ZONAL FLOWS ; DIII-D ; TOKAMAK ; TURBULENCE
收录类别	SCI
语种	英语
项目资助者	NSFC(10990210 ; NSFC(10990210 ; NSFC(10990210 ; NSFC(10990210 ; NSFC(10990210 ; NSFC(10990210 ; NSFC(10990210 ; NSFC(10990210 ; NSFC(10990210 ; NSFC(10990210 ; NSFC(10990210 ; NSFC(10990210 ; NSFC(10990210 ; NSFC(10990210 ; NSFC(10990210 ; NSFC(10990210 ; China National Fusion Project for ITER(2014GB106000 ; China National Fusion Project for ITER(2014GB106000 ; China National Fusion Project for ITER(2014GB106000 ; China National Fusion Project for ITER(2014GB106000 ; China National Fusion Project for ITER(2014GB106000 ; China National Fusion Project for ITER(2014GB106000 ; China National Fusion Project for ITER(2014GB106000 ; China National Fusion Project for ITER(2014GB106000 ; China National Fusion Project for ITER(2014GB106000 ; China National Fusion Project for ITER(2014GB106000 ; China National Fusion Project for ITER(2014GB106000 ; China National Fusion Project for ITER(2014GB106000 ; China National Fusion Project for ITER(2014GB106000 ; China National Fusion Project for ITER(2014GB106000 ; China National Fusion Project for ITER(2014GB106000 ; China National Fusion Project for ITER(2014GB106000 ; HL-2A Team ; HL-2A Team ; HL-2A Team ; HL-2A Team ; HL-2A Team ; HL-2A Team ; HL-2A Team ; HL-2A Team ; HL-2A Team ; HL-2A Team ; HL-2A Team ; HL-2A Team ; HL-2A Team ; HL-2A Team ; HL-2A Team ; HL-2A Team ; 10990211 ; 10990211 ; 10990211 ; 10990211 ; 10990211 ; 10990211 ; 10990211 ; 10990211 ; 10990211 ; 10990211 ; 10990211 ; 10990211 ; 10990211 ; 10990211 ; 10990211 ; 10990211 ; 2013GB106002 ; 2013GB106002 ; 2013GB106002 ; 2013GB106002 ; 2013GB106002 ; 2013GB106002 ; 2013GB106002 ; 2013GB106002 ; 2013GB106002 ; 2013GB106002 ; 2013GB106002 ; 2013GB106002 ; 2013GB106002 ; 2013GB106002 ; 2013GB106002 ; 2013GB106002 ; 11405214 ; 11405214 ; 11405214 ; 11405214 ; 11405214 ; 11405214 ; 11405214 ; 11405214 ; 11405214 ; 11405214 ; 11405214 ; 11405214 ; 11405214 ; 11405214 ; 11405214 ; 11405214 ; 2014GB106003) ; 2014GB106003) ; 2014GB106003) ; 2014GB106003) ; 2014GB106003) ; 2014GB106003) ; 2014GB106003) ; 2014GB106003) ; 2014GB106003) ; 2014GB106003) ; 2014GB106003) ; 2014GB106003) ; 2014GB106003) ; 2014GB106003) ; 2014GB106003) ; 2014GB106003) ; 11375188 ; 11375188 ; 11375188 ; 11375188 ; 11375188 ; 11375188 ; 11375188 ; 11375188 ; 11375188 ; 11375188 ; 11375188 ; 11375188 ; 11375188 ; 11375188 ; 11375188 ; 11375188 ; 11275234 ; 11275234 ; 11275234 ; 11275234 ; 11275234 ; 11275234 ; 11275234 ; 11275234 ; 11275234 ; 11275234 ; 11275234 ; 11275234 ; 11275234 ; 11275234 ; 11275234 ; 11275234 ; 11305208 ; 11305208 ; 11305208 ; 11305208 ; 11305208 ; 11305208 ; 11305208 ; 11305208 ; 11305208 ; 11305208 ; 11305208 ; 11305208 ; 11305208 ; 11305208 ; 11305208 ; 11305208 ; 11305215 ; 11305215 ; 11305215 ; 11305215 ; 11305215 ; 11305215 ; 11305215 ; 11305215 ; 11305215 ; 11305215 ; 11305215 ; 11305215 ; 11305215 ; 11305215 ; 11305215 ; 11305215 ; 11505221) ; 11505221) ; 11505221) ; 11505221) ; 11505221) ; 11505221) ; 11505221) ; 11505221) ; 11505221) ; 11505221) ; 11505221) ; 11505221) ; 11505221) ; 11505221) ; 11505221) ; 11505221)
WOS研究方向	Physics
WOS类目	Physics, Fluids & Plasmas
WOS记录号	WOS:000405943400002
引用统计	被引频次：12[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/33537
专题	中科院等离子体物理研究所
作者单位	1.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China 2.Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Peoples R China 3.Southwestern Inst Phys, POB 432, Chengdu 610041, Sichuan, Peoples R China 4.Zhejiang Univ, Inst Fus Theory & Simulat, Hangzhou 310027, Peoples R China 5.Zhejiang Univ, Inst Fus Theory & Simulat, Hangzhou 310027, Zhejiang, Peoples R China
第一作者单位	中科院等离子体物理研究所
推荐引用方式 GB/T 7714	Kong, D. F.,Liu, A. D.,Lan, T.,et al. Exciting and propagating characteristics of two coexisting kinetic geodesic acoustic modes in the edge of plasma[J]. NUCLEAR FUSION,2017,57(4).
APA	Kong, D. F..,Liu, A. D..,Lan, T..,Yu, C. X..,Cheng, J..,...&Liu, W. D..(2017).Exciting and propagating characteristics of two coexisting kinetic geodesic acoustic modes in the edge of plasma.NUCLEAR FUSION,57(4).
MLA	Kong, D. F.,et al."Exciting and propagating characteristics of two coexisting kinetic geodesic acoustic modes in the edge of plasma".NUCLEAR FUSION 57.4(2017).