| Edge Particle Flux with Temperature Fluctuation in the HL-2A Tokamak |
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| 引用本文： | 程均 严龙文 洪文玉 钱俊 赵开君. Edge Particle Flux with Temperature Fluctuation in the HL-2A Tokamak[J]. 中国物理快报, 2007, 24(11): 3191-3194 |
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| 作者姓名： | 程均 严龙文 洪文玉 钱俊 赵开君 |
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| 作者单位： | Southwestern Institute of Physics, Chengdu 610041 |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grant No 10675041. One of the authors （Cheng J.） would like to thank LIU Adi for the help on transacting the data and LAN Tao for useful discussion. We acknowledge the HL-2A Team for good operation. |
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| 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- 25 kHz） and higher frequency （50-250 kHz） 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.
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| 关 键 词： | 受控热核反应装置 HL-2A 原子核 核技术 |
| 收稿时间： | 2007-01-29 |
Edge Particle Flux with Temperature Fluctuation in the HL-2A Tokamak |
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| 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]. Chinese Physics Letters, 2007, 24(11): 3191-3194 |
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| Authors: | CHENG Jun YAN Long-Wen HONG Wen-Yu QIAN Jun ZHAO Kai-Jun |
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| Affiliation: | Southwestern Institute of Physics, Chengdu 610041 |
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| 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. |
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| Keywords: | 52.25.Gj 52.55.Fa |
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