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.
Received: 10 May 2005
Revised: 16 February 2006
Accepted manuscript online:
(Plasma diagnostic techniques and instrumentation)
Fund: Project supported by the Nuclear Industry Science Foundation of China (Grant No 19675013).
Cite this article:
Zheng Yong-Zhen (郑永真), Ding Xuan-Tong (丁玄同), Li Wen-Zhong (郦文忠) Runaway electrons as a diagnostic of plasma internal magnetic fluctuations 2006 Chinese Physics 15 1035
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