Experimental studies of electron transport
Experimental studies of electron transport
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DOI：
10.1088/0741-3335/43/12a/325
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发表时间：
2001-12
期刊：
影响因子：
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通讯作者：
F. Ryter;C. Angioni;M. Beurskens;S. Cirant;G. Hoang;G. Hogeweij;F. Imbeaux;A. Jacchia;P. Mantica
中科院分区：
文献类型：
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作者：
F. Ryter;C. Angioni;M. Beurskens;S. Cirant;G. Hoang;G. Hogeweij;F. Imbeaux;A. Jacchia;P. Mantica
托卡马克中的电子输运有许多不同的特点，本文对此作了简要的评述。本文主要研究常规托卡马克等离子体中的电子热输运。机间比较表明，无量纲梯度长度的电子温度分布R/L Te几乎是独立的设备和变化不大的等离子体参数。这强烈表明，电子热输运是由湍流与R/L Te的阈值。这是证实了调制实验，使用电子回旋加热。基于经验和物理的运输模型的模拟证实了这一假设。
Electron transport in tokamaks has many different features which are briefly reviewed. The paper is focused on electron heat transport in conventional tokamak plasmas. An inter-machine comparison indicates that the non-dimensional gradient length of the electron temperature profiles R/L Te is almost independent of the devices and varies little with plasma parameters. This strongly suggests that electron heat transport is governed by turbulence with a threshold in R/L Te . This is confirmed by modulation experiments using electron cyclotron heating. Simulations with empirical and physics-based transport models confirm this assumption.