Detection of dust on JET with the high resolution Thomson scattering system.
Detection of dust on JET with the high resolution Thomson scattering system.
复制标题
使用高分辨率汤姆逊散射系统检测 JET 上的灰尘。
DOI：
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发表时间：
2010
影响因子：
1.6
通讯作者：
A. Rydzy
中科院分区：
文献类型：
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作者：
E. Giovannozzi;M. Beurskens;M. Kempenaars;R. Pasqualotto;A. Rydzy
尘埃粒子已被观测到汤姆逊散射系统在几个托卡马克。在这里，我们提出的第一个证据，尘埃粒子观察到的新的高分辨率汤姆逊散射系统JET。该系统由滤波光谱仪组成，可在四个光谱通道中分析670至1050 nm的汤姆逊散射光谱。激光源是5 J Q开关Nd：YAG激光器。如果没有激光波长的光谱通道，只能探测到发出宽带光的尘埃粒子;这些粒子在中断后在JET上被观察到。它们发射的时间与汤姆逊散射脉冲的预期时间明显不同。来自尘埃的光脉冲发生在激光的峰值之后，并且有一个很长的尾巴。
Dust particles have been observed with Thomson scattering systems on several tokamaks. We present here the first evidence of dust particles observed by the new high resolution Thomson scattering system on JET. The system consists of filter spectrometers that analyze the Thomson scattering spectrum from 670 to 1050 nm in four spectral channels. The laser source is a 5 J Q-switched Nd:YAG laser. Without a spectral channel at the laser wavelength, only dust particles that emit broadband light could be detected; these particles have been observed on JET after disruptions. The timing of their emission is clearly different from that expected for a Thomson scattering pulse. The light pulse from dust happens after the peak of the laser light and has a long tail.