A high resolution multiposition Thomson scattering system for the Rijnhuizen Tokamak Project
A high resolution multiposition Thomson scattering system for the Rijnhuizen Tokamak Project
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用于 Rijnhuizen 托卡马克项目的高分辨率多位汤姆逊散射系统
DOI：
10.1063/1.1148345
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发表时间：
1997
影响因子：
1.6
通讯作者：
F. Pijper
中科院分区：
文献类型：
--
作者：
C. J. Barth;M. Beurskens;C. Chu;A. Donné;N. Cardozo;J. Herranz;H. V. D. Meiden;F. Pijper
本文介绍了一种用于测量高温等离子体电子温度和密度的高分辨率多位置汤姆逊散射装置。该系统在Rijnhuizen托卡马克项目中运行。来自高功率脉冲红宝石激光器的光被自由等离子体电子散射，并中继到利特罗多色仪进行光谱分析。光谱和空间分辨的光由GaAsP光电阴极检测。用电荷耦合器件照相机增强并记录二维图像。在50 eV-6 keV范围内的Te可以在沿激光束沿着2.6 mm长度的115个空间单元处测量。当ne=2×1019 m−3时，观测误差小于6%，当ne更高时，观测误差更小。高分辨率和高精度使Te和ne的小尺度结构的观察成为可能。
A high resolution multiposition Thomson scattering setup to measure the electron temperature (Te) and density (ne) of a hot plasma is described. The system is operational at the Rijnhuizen Tokamak Project. Light from a high power pulsed ruby laser is scattered by the free plasma electrons and relayed to a Littrow polychromator for spectral analysis. The spectrally and spatially resolved light is detected by a GaAsP photocathode. The two-dimensional image is intensified and recorded with a charge-coupled device camera. Te in the range of 50 eV–6 keV can be measured at 115 spatial elements of 2.6 mm length along the laser beam. The observation error is <6% at ne=2×1019 m−3 and smaller for higher ne. The high resolution and accuracy enabled the observation of small scale structures in Te and ne.