Experimental Study of Turbulence and Zonal Flow in Edge Plasmas of the HL-2A Tokamak

Jiaqi DONG; Kaijun ZHAO; Longwen YAN; Wenyu HONG; Changxuan YU; Akihide FUJISAWA; Jun QIAN; Jun CHENG; Adi LIU; Tao LAN; Hailin ZHAO; Defeng KONG; Yi LIU; Yuan HUANG; Qiang LI; Xianming SONG; Qingwei YANG; Xuantong DING; Xuru DUAN; Yong LIU

doi:10.1585/pfr.5.S2014

Regular Articles

Experimental Study of Turbulence and Zonal Flow in Edge Plasmas of the HL-2A Tokamak

Jiaqi DONG, Kaijun ZHAO, Longwen YAN, Wenyu HONG, Changxuan YU, Akihide FUJISAWA, Jun QIAN, Jun CHENG, Adi LIU, Tao LAN, Hailin ZHAO, Defeng KONG, Yi LIU, Yuan HUANG, Qiang LI, Xianming SONG, Qingwei YANG, Xuantong DING, Xuru DUAN, Yong LIU

著者情報

Jiaqi DONG
Southwestern Institute of Physics, P. O. Box 432, Chengdu, China
Institute for Fusion Theory and Simulation, Zhejiang University, Hangzhou, China
Kaijun ZHAO
Southwestern Institute of Physics, P. O. Box 432, Chengdu, China
Longwen YAN
Southwestern Institute of Physics, P. O. Box 432, Chengdu, China
Wenyu HONG
Southwestern Institute of Physics, P. O. Box 432, Chengdu, China
Changxuan YU
Department of Modern Physics, University of Science and Technology of China, Hefei, China
Akihide FUJISAWA
National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5292, Japan
Jun QIAN
Southwestern Institute of Physics, P. O. Box 432, Chengdu, China
Jun CHENG
Southwestern Institute of Physics, P. O. Box 432, Chengdu, China
Adi LIU
Department of Modern Physics, University of Science and Technology of China, Hefei, China
Tao LAN
Department of Modern Physics, University of Science and Technology of China, Hefei, China
Hailin ZHAO
Department of Modern Physics, University of Science and Technology of China, Hefei, China
Defeng KONG
Department of Modern Physics, University of Science and Technology of China, Hefei, China
Yi LIU
Southwestern Institute of Physics, P. O. Box 432, Chengdu, China
Yuan HUANG
Southwestern Institute of Physics, P. O. Box 432, Chengdu, China
Qiang LI
Southwestern Institute of Physics, P. O. Box 432, Chengdu, China
Xianming SONG
Southwestern Institute of Physics, P. O. Box 432, Chengdu, China
Qingwei YANG
Southwestern Institute of Physics, P. O. Box 432, Chengdu, China
Xuantong DING
Southwestern Institute of Physics, P. O. Box 432, Chengdu, China
Xuru DUAN
Southwestern Institute of Physics, P. O. Box 432, Chengdu, China
Yong LIU
Southwestern Institute of Physics, P. O. Box 432, Chengdu, China

キーワード: turbulence, zonal flow, geodesic acoustic mode, coherency, Langmuir probe

ジャーナルフリー

2010 年 5 巻 p. S2014

DOI https://doi.org/10.1585/pfr.5.S2014

詳細

抄録

Measurements with a three dimensional set of Langmuir probe arrays have unambiguously demonstrated the coexistence of intensive low frequency zonal flows (LFZFs), geodesic acoustic modes (GAMs), low frequency fluctuations (LFFs) and high frequency ambient turbulence (HFAT) in the edge of HL-2A tokamak plasmas, by verifying the temporal and spatial characteristics of the electrostatic fluctuations. The intensity of the LFZFs is observed to increase and decrease with increases of ECRH power (∼ 300-700 kW) and safety factor q (∼ 3.5-6.2), respectively, and the intensity of the GAMs increases with the ECRH power as well as q. The radial wave number-frequency spectra of the LFZF show that the LFZF packets propagate outwards and inwards as equally likely events, while the GAM packets propagate predominantly outwards. The three wave coupling of the zonal flows, including the GAMs, and the LFFs with the HFAT is investigated in detail.

責任著者(Corresponding author)

J-STAGEへの登録はこちら（無料）