中国物理B ›› 2006, Vol. 15 ›› Issue (5): 1035-1040.doi: 10.1088/1009-1963/15/5/028

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Runaway electrons as a diagnostic of plasma internal magnetic fluctuations

郑永真, 丁玄同, 郦文忠   

  1. Southwestern Institute of Physics, Chengdu 610041, China
  • 收稿日期:2005-05-10 修回日期:2006-02-16 出版日期:2006-05-20 发布日期:2006-05-20
  • 基金资助:
    Project supported by the Nuclear Industry Science Foundation of China (Grant No 19675013).

Runaway electrons as a diagnostic of plasma internal magnetic fluctuations

Zheng Yong-Zhen (郑永真), Ding Xuan-Tong (丁玄同), Li Wen-Zhong (郦文忠)   

  1. Southwestern Institute of Physics, Chengdu 610041, China
  • Received:2005-05-10 Revised:2006-02-16 Online:2006-05-20 Published:2006-05-20
  • Supported by:
    Project supported by the Nuclear Industry Science Foundation of China (Grant No 19675013).

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摘要： The transport of runaway electrons in a high-temperature plasma is relatively easy to measure in a steady state experiment and a perturbation experiment, which provides runaway electron diffusion coefficient Dr. This diffusion coefficient is determined by internal magnetic fluctuations, so it can be interpreted in terms of a magnetic fluctuation level. The internal magnetic fluctuation level ($\tilde {b}r/BT is estimated to be about (2--4)×-4 in the HL-1M plasma. The results presented here demonstrate the effectiveness of using runaway electron transport techniques to determine internal magnetic fluctuations. A profile of magnetic fluctuation level in the HL-1M plasma can be estimated from Dr.

关键词: transport of runway electron, diffusivity, intrinsic magnetic fluctuations, HXR

Abstract: The transport of runaway electrons in a high-temperature plasma is relatively easy to measure in a steady state experiment and a perturbation experiment, which provides runaway electron diffusion coefficient Dr. This diffusion coefficient is determined by internal magnetic fluctuations, so it can be interpreted in terms of a magnetic fluctuation level. The internal magnetic fluctuation level ($\tilde{b}_{\rm r}/B_{\rm T}$) is estimated to be about (2--4)×-4 in the HL-1M plasma. The results presented here demonstrate the effectiveness of using runaway electron transport techniques to determine internal magnetic fluctuations. A profile of magnetic fluctuation level in the HL-1M plasma can be estimated from Dr.

Key words: transport of runway electron, diffusivity, intrinsic magnetic fluctuations, HXR

中图分类号:  (Fluctuation and chaos phenomena)

  • 52.25.Gj
52.25.Fi (Transport properties) 52.35.Ra (Plasma turbulence) 52.70.-m (Plasma diagnostic techniques and instrumentation)