Spatiotemporal characterization of zonal flows with multi-channel correlation Doppler reflectometers in the HL-2A Tokamak
作者: W.L. ZhongZ.B. ShiY. XuX.L. ZouX.R. DuanW. ChenM. JiangZ.C. YangB.Y. ZhangP.W. ShiZ.T. LiuM. XuX.M. SongJ. ChengR. KeL. NieZ.Y. CuiB.Z. FuX.T. DingJ.Q. DongYi LiuL.W. YanQ.W. YangY. LiuHL-2A team
作者单位: 1Southwestern Institute of Physics, PO Box 432, Chengdu 610041, People’s Republic of China
2CEA, IRFM, F-13108 Saint-Paul-lez-Durance, France
3School of Physics and Chemistry, Xihua University, Chengdu 610039, People’s Republic of China
4Institute for Fusion Theory and Simulation, Zhejiang University, Hangzhou 310027, People’s Republic of China
刊名: Nuclear Fusion, 2015, Vol.55 (11)
来源数据库: Institute of Physics Journal
DOI: 10.1088/0029-5515/55/11/113005
原始语种摘要: The oscillations of poloidal plasma flows induced by radially sheared zonal flows are investigated by newly developed correlation Doppler reflectometers in the HL-2A tokamak. The non-disturbing diagnostic allows one to routinely measure the rotation velocity of turbulence, and hence the radial electric field fluctuations. With correlation Doppler reflectometers, a three-dimensional spatial structure of geodesic acoustic mode (GAM) is surveyed, including the symmetric feature of poloidal and toroidal E r fluctuations, the dependence of GAM frequency on radial temperature and the radial propagation of GAMs. The co-existence of low-frequency zonal flow and GAM is presented. The temporal behaviors of GAM during ramp-up experiments of plasma current and electron density are...
全文获取路径: IOP 

  • zonal 带状的
  • Doppler 多普勒
  • oscillation 振荡
  • correlation 对比
  • radial 放射状的
  • tokamak 托卡马克
  • velocity 速度
  • temporal 现世的
  • symmetric 对称的
  • rotation 旋转