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Analysis of the Zeeman effect on Dα spectra on the EAST tokamak

Analysis of the Zeeman effect on Dα spectra on the EAST tokamak
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摘要 基于被动光谱学,在血浆的边界区域的原子排放系列被一个高决定测量了在东方 tokamak 的光分光镜的多信道的分析(OSMA ) 系统。切开的 Zeeman 光谱线被观察了。由使用一个非线性的最少的广场方法的一个恰当的过程被使用适合并且分析原子系列的所有极化和部件获得本地血浆的信息。光谱线形状从不同区域根据排放系列被调查(例如,低地的方面和高地的方面) 沿着看的弦。每个极化部件被适合并且基于不同原子生产过程分类进三个精力范畴(冷、温暖、热的部件) ,在与由计算坡度的转变精力分发一致光谱侧面。一个重氢原子的排放位置,磁场紧张,和流动速度也在上下文被讨论。 Based on the passive spectroscopy,the D_α atomic emission spectra in the boundary region of the plasma have been measured by a high resolution optical spectroscopic multichannel analysis(OSMA) system in EAST tokamak.The Zeeman splitting of the D_α spectral lines has been observed.A fitting procedure by using a nonlinear least squares method was applied to fit and analyze all polarization π and ±σ components of the D_α atomic spectra to acquire the information of the local plasma.The spectral line shape was investigated according to emission spectra from different regions(e.g.,low-field side and high-field side) along the viewing chords.Each polarization component was fitted and classified into three energy categories(the cold,warm,and hot components) based on different atomic production processes,in consistent with the transition energy distribution by calculating the gradient of the D_α spectral profile.The emission position,magnetic field intensity,and flow velocity of a deuterium atom were also discussed in the context.
作者 高伟 黄娟 吴承瑞 许棕 侯玉梅 金钊 陈颖杰 张鹏飞 张凌 吴振伟 EAST Team Wei Gao, Juan Huang. Chengrui Wu. Zong Xu, Yumei Hou, Zhao Jin. Yingjie Chen, Pengfei Zhang, Ling Zhang, Zhenwei Wu EAST Team (Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China)
出处 《中国物理B:英文版》 SCIE EI CAS CSCD 2017年第4期276-282,共7页 Chinese Physics
基金 Project supported by the National Natural Science Foundation of China(Grant Nos.11275231 and 11575249) the National Magnetic Confinement Fusion Energy Research Program of China(Grant No.2015GB110005)
关键词 EAST 塞曼效应 托卡马克 原子发射光谱 非线性最小二乘法 Α谱 三维 等离子体 Zeeman effect, plasma, spectrum, deuterium
作者简介 Corresponding author. E-mail: gaowei@ipp.ac.cn Corresponding author. E-mail: juan.huang@ipp.ac.cn
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