摘要
Enhancements of edge zonal flows,radial electric fields,and turbulence are observed in electron cyclotron resonance heating-heated plasmas(Zhao et al 2013 Nucl.Fusion 53083011).In this paper,the effects of sawtooth heat pulses on flows and turbulence are presented.These experiments are performed using multiple Langmuir probe arrays in the edge plasmas of the HL-2A tokamak.The edge zonal flows,radial electric fields,and turbulence are all enhanced by sawteeth.Propagation of the zonal flow and turbulence intensities is also observed.The delay time of the maximal intensity of the electric fields,zonal flows,and turbulence with respect to the sawtooth crashes is estimated as~1 ms and comparable to that of the sawtooth-triggered intermediate phases.Not only the zonal flows but also the radial electric fields lag behind the turbulence.Furthermore,the intensities of both the zonal flows and electric fields nearly linearly increase/decrease with the increase/decrease of the turbulence intensity.A double-source predator-prey model analysis suggests that a relatively strong turbulence source may contribute to the dominant zonal flow formation during sawtooth cycles.
作者
赵开君
Yoshihiko NAGASHIMA
郭志彬
Patrick H DIAMOND
董家齐
严龙文
Kimitaka ITOH
Sanae-I ITOH
李晓博
李继全
Akihide FUJISAWA
Shigeru INAGAKI
程钧
许健强
Yusuke KOSUGA
Makoto SASAKI
王正汹
张怀强
陈俞钱
曹小岗
余德良
刘仪
宋显明
夏凡
王硕
Kaijun ZHAO;Yoshihiko NAGASHIMA;Zhibin GUO;Patrick H DIAMOND;Jiaqi DONG;Longwen YAN;Kimitaka ITOH;Sanae-I ITOH;Xiaobo LI;Jiquan LI;Akihide FUJISAWA;Shigeru INAGAKI;Jun CHENG;Jianqiang XU;Yusuke KOSUGA;Makoto SASAKI;Zhengxiong WANG;Huaiqiang ZHANG;Yuqian CHEN;Xiaogang CAO;Deliang YU;Yi LIU;Xianming SONG;Fan XIA;Shuo WANG(School of Nuclear Science and Engineer,East China University of Technology,Nanchang 330013,People's Republic of China;Research Institute for Applied Mechanics,Kyushu University,Kasuga 816-8580,Japan;School of Physics,Peking University,Beijing 100871,People's Republic of China;Center for Momentum Transport and Flow Organization,University of California at San Diego,California 92093,United States of America;Southwestern Institute of Physics,Chengdu 610041,People's Republic of China;Institute of Science and Technology Research,Chubu University,Aichi 487-8501,Japan;Research Center for Plasma Turbulence,Kyushu University,Kasuga 816-8580,Japan;National Institute for Fusion Science,Toki 509-5292,Japan;Department of Innovative Energy Science and Engineering,Graduate School of Engineering,Chubu University,Aichi 487-8501,Japan;Institute of Fusion Science,School of Physical Science and Technology,Southwest Jiaotong University,Chengdu 610031,People's Republic of China;School of Physics and Optoelectronic Technology,Dalian University of Technology,Dalian 116024,People's Republic of China)
基金
National Natural Science Foundation of China(Nos.12075057,11775069,11320101005,and 11875020)
National Magnetic Confinement Fusion Science Program of China(No.2017YFE0301201)
East China University of Technology,Doctoral Foundation(Nos.DHBK 2017134 and DHBK 2018059)
Grant-in-Aid for Scientific Research of the Japan Society for the Promotion of Science(Nos.15H02155,15H02335,21K03513)
Landmark Achievements in Nuclear Science and Technology(No.xxkjs2018011)
Natural Science Foundation of Jiangxi Province(Nos.20202ACBL201002 and 0192ACB80006)。
