摘要Electron temperature, density, plasma potential and their fluctuation profiles at edge plasmas are measured simultaneously with a reciprocating probe system in HL-2A. The analysis results of four-tip data indicate that the temperature fluctuation has relative amplitude of 10--15%, gives more contribution to particle flux in lower (0--25kHz) and higher frequency (50--250kHz) ranges. The coherence between temperature fluctuations and density or potential fluctuations implies that their coupling will impact anomalous transport. The measured diffusion coefficient is about three times of the Bohm diffusion coefficient when considering the temperature fluctuation. The particle flux with temperature fluctuation is discussed in HL-2A for the first time.
Abstract：Electron temperature, density, plasma potential and their fluctuation profiles at edge plasmas are measured simultaneously with a reciprocating probe system in HL-2A. The analysis results of four-tip data indicate that the temperature fluctuation has relative amplitude of 10--15%, gives more contribution to particle flux in lower (0--25kHz) and higher frequency (50--250kHz) ranges. The coherence between temperature fluctuations and density or potential fluctuations implies that their coupling will impact anomalous transport. The measured diffusion coefficient is about three times of the Bohm diffusion coefficient when considering the temperature fluctuation. The particle flux with temperature fluctuation is discussed in HL-2A for the first time.
CHENG Jun;YAN Long-Wen;HONG Wen-Yu;QIAN Jun;ZHAO Kai-Jun. Edge Particle Flux with Temperature Fluctuation in the HL-2A Tokamak[J]. 中国物理快报, 2007, 24(11): 3191-3194.
CHENG Jun, YAN Long-Wen, HONG Wen-Yu, QIAN Jun, ZHAO Kai-Jun. Edge Particle Flux with Temperature Fluctuation in the HL-2A Tokamak. Chin. Phys. Lett., 2007, 24(11): 3191-3194.
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