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Effects of electrode biasing on fluctuations and transport in the KT-5C tokamak

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10 Author(s)
Cheng Wang ; Dept. of Modern Phys., Univ. of Sci. & Technol. of China, Hefei, China ; Ge-Sheng Pan ; Yu, Chang-Xuan ; Wen, Yi-Zhi
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Electrode biasing experiments are carried out on the KT-5C tokamak to investigate the effects of the radial electric field Er on turbulence. A modestly enhanced Er gradient layer is formed at the plasma edge by the electrode biasing. In the Er gradient layer, reductions in the fluctuation amplitude, radial correlation length and turbulent particle flux are observed. These results support the theoretical models on the turbulence suppression by decorrelation due to E × B flow shear

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Plasma Science, IEEE Transactions on  (Volume:30 ,  Issue: 2 )