首页|Wavelength calibration and spectral analysis of vacuum ultraviolet spectroscopy in EAST

Wavelength calibration and spectral analysis of vacuum ultraviolet spectroscopy in EAST

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A vacuum ultraviolet(VUV)spectroscopy with a focal length of 1 m has been engineered specifically for observing edge impurity emissions in Experimental Advanced Superconducting Tokamak(EAST).In this study,wavelength calibration for the VUV spectroscopy is achieved utilizing a zinc lamp.The grating angle and charge-coupled device(CCD)position are carefully calibrated for different wavelength positions.The wavelength calibration of the VUV spectroscopy is crucial for improving the accuracy of impurity spectral data,and is required to identify more impurity spectral lines for impurity transport research.Impurity spectra of EAST plasmas have also been obtained in the wavelength range of 50-300 nm with relatively high spectral resolution.It is found that the impurity emissions in the edge region are still dominated by low-Z impurities,such as carbon,oxygen,and nitrogen,albeit with the application of full-tungsten divertors on the EAST tokamak.

vacuum ultraviolet spectroscopywavelength calibrationimpurity spectra

计华健、张洪明、吕波、Cheonho BAE、何梁、林子超、尹相辉、沈永才、戴舒宇

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Institute of Plasma Physics,Chinese Academy of Sciences,Hefei 230031,People's Republic of China

Science Island Branch,Graduate School,University of Science and Technology of China,Hefei 230031,People's Republic of China

College of Electrical Engineering,University of South China,Hengyang 421001,People's Republic of China

School of Physics and Materials Engineering,Hefei Normal University,Hefei 230601,People's Republic of China

School of Physics,Dalian University of Technology,Dalian 116024,People's Republic of China

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2024

10.1088/2058-6272/ad4f24

等离子体科学和技术(英文版)
中国科学院合肥物质科学研究所 中国力学学会

等离子体科学和技术(英文版)

EI
影响因子：0.297
ISSN：1009-0630
年,卷(期)：2024.26(8)