Self-Organized Criticality Properties of the Turbulence-Induced
Particle Flux at the Plasma Edge of the HT-6M Tokamak
WANG Wen-Hao1, YU Chang-Xuan1, WEN Yi-Zhi1, XU Yu-Hong2, LING Bi-Li2, GONG Xian-Zu2, LIU Bao-Hua2, WAN Bao-Nian2
1Department of Modern Physics, University of Science and Technology of China, Hefei 230027
2Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031
Self-Organized Criticality Properties of the Turbulence-Induced
Particle Flux at the Plasma Edge of the HT-6M Tokamak
WANG Wen-Hao1;YU Chang-Xuan1;WEN Yi-Zhi1;XU Yu-Hong2;LING Bi-Li2;GONG Xian-Zu2;LIU Bao-Hua2;WAN Bao-Nian2
1Department of Modern Physics, University of Science and Technology of China, Hefei 230027
2Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031
Abstract： Power spectrum and the probability distribution function (PDF) of the turbulence-induced particle flux Γ in the velocity shear layer of the HT-6M edge region have been measured and analysed. Three regions of frequency dependence (f0, f-1, f-4) have been observed in the spectrum of the flux. The PDF of the flux displays a Γ-1 scaling over one decade in Γ. Using the rescaled-range statistical technique, we find that the degree of the self-similarity (Hurst exponent) of the particle flux in the measured region ranges from 0.64 to 0.83. All of these results may mean that the plasma transport is in a state characterized by the self-organized criticality.
WANG Wen-Hao;YU Chang-Xuan;WEN Yi-Zhi;XU Yu-Hong;LING Bi-Li;GONG Xian-Zu;LIU Bao-Hua;WAN Bao-Nian. Self-Organized Criticality Properties of the Turbulence-Induced
Particle Flux at the Plasma Edge of the HT-6M Tokamak
[J]. 中国物理快报, 2001, 18(6): 793-795.
WANG Wen-Hao, YU Chang-Xuan, WEN Yi-Zhi, XU Yu-Hong, LING Bi-Li, GONG Xian-Zu, LIU Bao-Hua, WAN Bao-Nian. Self-Organized Criticality Properties of the Turbulence-Induced
Particle Flux at the Plasma Edge of the HT-6M Tokamak
. Chin. Phys. Lett., 2001, 18(6): 793-795.
YANG Qing-Wei;ZHOU Hang-Yu;FENG Bei-Bin;LIU Yi;PAN Yu-Dong;LI Wei;DUAN Xu-Ru;CHEN Wei;CUI Zheng-Ying;JI Xiao-Quan;DING Xuan-Tong;HL-A team. A New Criterion for Disruption Prediction on HL-2A[J]. 中国物理快报, 2006, 23(4): 891-894.
2001, Vol. 18 
