Chapter 4: Laser-Aided Plasma Diagnostics
Chapter 4: Laser-Aided Plasma Diagnostics
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DOI：
10.13182/fst08-a1676
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发表时间：
2008-02
影响因子：
0.9
通讯作者：
A. Donné;C. J. Barth;H. Weisen
中科院分区：
文献类型：
--
作者：
A. Donné;C. J. Barth;H. Weisen
摘要 激光辅助诊断广泛应用于高温等离子体诊断领域，可进行多种测量。非相干汤姆逊散射用于等离子体中电子温度和密度的高度局部测量。相干汤姆逊散射产生有关等离子体中快离子群的信息和/或取决于所选择的几何形状和波长的电子密度波动。干涉测量法和偏振测量法通常结合在单个诊断装置中，以测量电子密度和平行于激光弦的磁场分量。密度波动可以通过相衬成像、散射和各种其他激光辅助技术来测量。本文主要关注主流磁约束研究中使用的激光诊断（托卡马克和仿星器，以及其他设备的一些示例，如果适用）。本文对每种技术进行了简要的教程介绍，然后描述了磁约束装置的一些典型实现以及最近实验结果的一些示例。还讨论了每种技术在 ITER 托卡马克中的潜在应用。本文并不是对多年来在该领域所做的所有工作进行全面而详尽的回顾。
Abstract Laser-aided diagnostics are widely applied in the field of high-temperature plasma diagnostics for a large variety of measurements. Incoherent Thomson scattering is used for highly localized measurements of the electron temperature and density in the plasma. Coherent Thomson scattering yields information on the fast ion population in the plasma and/or depending on the geometry and wavelength chosen electron density fluctuations. Interferometry and polarimetry are often combined in a single diagnostics setup to measure the electron density and the component of the magnetic field parallel to the laser chord. Density fluctuations can be measured by means of phase contrast imaging, scattering, and various other laser-aided techniques. This paper is primarily focused on laser diagnostics utilized in the mainstream magnetic confinement research (tokamaks and stellarators with some examples from other devices if applicable). In the paper a brief tutorial introduction in each of the techniques is given, followed by a description of some typical implementations on magnetic confinement devices and some examples of recent experimental results. For each of the techniques the potential application to the ITER tokamak is also discussed. The paper is not meant as a comprehensive and exhaustive review giving a proper tribute to all the work that has been done in this field over the years.