Investigation of electromagnetic geodesic acoustic mode in EAST RF-heating plasma
Investigation of electromagnetic geodesic acoustic mode in EAST RF-heating plasma
复制标题
EAST 射频加热等离子体中电磁测地声学模式的研究
DOI：
10.1063/1.5022341
复制
发表时间：
2018
影响因子：
2.2
通讯作者：
Liu W. D.
中科院分区：
文献类型：
--
作者：
Wang M. Y.;Zhou C.;Liu A. D.;Zhang J.;Liu Z. Y.;Feng X.;Ji J. X.;Li H.;Lan T.;Xie J. L.;Shi T. H.;Liu Y.;Ding B. J.;Ding W. X.;Mao W. Z.;Zhuang G.;Liu W. D.
利用多普勒后向散射系统和米尔诺夫探针研究了实验先进超导托卡马克边缘等离子体中离子回旋共振加热和低混合波加热过程中测地声波模式（GAM）的磁涨落，并观察了GAM的磁性成分。 GAM的频率与边缘电子温度有明显的关系，GAM磁结构的极向分量模数大约为m=2(sin(2θ))和n = 0。更详细的研究表明，极向磁场波动和极向电场波动幅度的最大值分别约为10 − 6 T和200 V/m。使用多普勒背向散射系统和米尔诺夫探针研究了实验先进超导托卡马克边缘等离子体中离子回旋共振加热和低混合波加热过程中测地声学模式（GAM）的波动，并观察了GAM的磁性成分。 GAM的频率与边缘电子温度有明显的关系，GAM磁结构的极向分量的模数大约为m=2(sin(2θ))和n = 0。更详细的研究表明，极向磁场波动和极向电场波动幅度的最大值分别约为10 − 6 T和200 V/m。
The magnetic fluctuations of geodesic acoustic modes (GAMs) have been investigated using a Doppler backscattering system and Mirnov probes during ion cyclotron resonance heating and lower hybrid wave heating in the edge plasma in the experimental advanced superconducting tokamak, and the magnetic component of the GAM was observed. The frequency of the GAM has a clear relationship with the edge electron temperature, and the mode numbers of the poloidal component of the magnetic structure of the GAM are approximately m = 2 ( sin ( 2 θ ) ) and n = 0. A more detailed investigation shows that the maximum values of the amplitude of the poloidal magnetic field fluctuations and poloidal electric field fluctuations are approximately 10 − 6 T and 200 V/m, respectively.The magnetic fluctuations of geodesic acoustic modes (GAMs) have been investigated using a Doppler backscattering system and Mirnov probes during ion cyclotron resonance heating and lower hybrid wave heating in the edge plasma in the experimental advanced superconducting tokamak, and the magnetic component of the GAM was observed. The frequency of the GAM has a clear relationship with the edge electron temperature, and the mode numbers of the poloidal component of the magnetic structure of the GAM are approximately m = 2 ( sin ( 2 θ ) ) and n = 0. A more detailed investigation shows that the maximum values of the amplitude of the poloidal magnetic field fluctuations and poloidal electric field fluctuations are approximately 10 − 6 T and 200 V/m, respectively.