等离子体光谱的高分辨测量与信号处理  

HighResolution Spectroscopic Measurement System and Numerical Method for Plasma Diagnostic

作　　者：赵庆勋[1] 李赞良[2] 郑少白[2] 

机构地区：[1]河北大学物理系,河北保定071002 [2]中国科学院物理研究所北京,100080

出　　处：《河北大学学报（自然科学版）》2000年第4期329-334,共6页Journal of Hebei University(Natural Science Edition)

基　　金：国家自然科学基金资助项目 ;河北省自然科学基金资助项目! (5 990 91)

摘　　要：介绍了所建立的用于等离子体光诊断的高分辨光谱测量系统 ,谱分辨Δλ =0 .0 0 8nm ,信号的数据处理可提高光谱分辨至 0 .0 0 0 8nm .实验对CT 6B托卡马克等离子体进行了空间分辨测量 .结果表明 :对磁约束高温低密度等离子体 ,发光粒子的光谱线型为高斯线型 ,由离子的测量推断出等离子体中发光离子有比较窄的壳层分布 。A highresolution spectroscopic detection system for plasma diagnostics is presented in this paper. A numerical method can improve the spectral resolution of optical spectrometer from 0.008 nm to 0.000 8 nm. As an example, the system is successfully applied to the analysis of plasma spectra in CT6B Tokamak. The results show that the spectra profile is Gaussian distribution in low density plasma . There are series of emission shells in high temperature plasma, and the line emission of different ionic species is localized to narrow shells at an appropriate radius. The radiant intensity of neutral hydrogen is obvious fluctuation in plasma.

关 键 词：等离子体 高分辨光谱测量系统 辐射壳层 信号处理 

分 类 号：O433.1[机械工程—光学工程]