Tokamak plasma diagnosis by electrical probes
Tokamak plasma diagnosis by electrical probes
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DOI：
10.1088/0741-3335/36/10/002
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发表时间：
1994-10
影响因子：
2.2
通讯作者：
G. Matthews
中科院分区：
文献类型：
--
作者：
G. Matthews
本文综述了在托卡马克边缘等离子体诊断中电探针的理解和应用方面的进展。朗缪尔探针仍然是托卡马克中最常用的诊断工具之一，但我们对于如何在强磁场中解释它们的理解仍然相当有限。安装在偏滤器板上的嵌入式朗缪尔探针的最新结果被用于强调问题所在，特别是离子电流不饱和以及电子与离子饱和电流之比偏低的问题。强调了测量等离子体边缘平行流速的重要性，并讨论了用于解释马赫探针的理论的最新进展。最后，强调了离子温度和杂质含量诊断的重要性，并在此背景下综述了诸如阻滞场分析仪和质谱仪等先进电探针在托卡马克边界应用中的进展。
This paper reviews progress in the understanding and application of electrical probes for the diagnosis of tokamak edge plasmas. Langmuir probes are still one of the most commonly applied diagnostics in tokamaks but our understanding of how to interpret them in strong magnetic fields is still rather limited. Recent results from flush-mounted Langmuir probes in divertor plates are used to highlight the problem areas, in particular non-saturation of the ion current and low electron to ion saturation current ratios. The importance of measuring the parallel flow velocity in the plasma edge is highlighted and recent developments in theories for interpretation of Mach probes are discussed. Finally, the importance of diagnostics for ion temperature and impurity content is emphasized, and progress in the application of advanced electrical probes such as retarding field analysers and mass spectrometers to the tokamak boundary is reviewed in this context.