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

doi:10.1088/1674-1056/26/4/045203

中国物理B ›› 2017, Vol. 26 ›› Issue (4): 45203-045203.doi: 10.1088/1674-1056/26/4/045203

• PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES • 上一篇下一篇

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

Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China

收稿日期:2016-11-28 修回日期:2017-01-17 出版日期:2017-04-05 发布日期:2017-04-05
通讯作者: Wei Gao, Juan Huang E-mail:gaowei@ipp.ac.cn;juan.huang@ipp.ac.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11275231 and 11575249) and the National Magnetic Confinement Fusion Energy Research Program of China (Grant No. 2015GB110005).

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

Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China

Received:2016-11-28 Revised:2017-01-17 Online:2017-04-05 Published:2017-04-05
Contact: Wei Gao, Juan Huang E-mail:gaowei@ipp.ac.cn;juan.huang@ipp.ac.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11275231 and 11575249) and the National Magnetic Confinement Fusion Energy Research Program of China (Grant No. 2015GB110005).

摘要/Abstract

摘要： 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.

关键词: Zeeman effect, plasma, spectrum, deuterium

Abstract: 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.

Key words: Zeeman effect, plasma, spectrum, deuterium

中图分类号: (Optical (ultraviolet, visible, infrared) measurements)

52.70.Kz

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. Analysis of the Zeeman effect on D_α spectra on the EAST tokamak[J]. 中国物理B, 2017, 26(4): 45203-045203.

Wei Gao(高伟), Juan Huang(黄娟), Chengrui Wu(吴承瑞), Zong Xu(许棕), Yumei Hou(侯玉梅), Zhao Jin(金钊), Yingjie Chen(陈颖杰), Pengfei Zhang(张鹏飞), Ling Zhang(张凌), Zhenwei Wu(吴振伟), EAST Team. Analysis of the Zeeman effect on D_α spectra on the EAST tokamak[J]. Chin. Phys. B, 2017, 26(4): 45203-045203.

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

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

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