Relative Spectral Intensity Response Calibration of Spectrometers Using Ar Plasma Emission Branching Ratio Method
MA Yun-yun1, WANG Yong-qiang2, MIN Qi2, CAO Shi-quan2, ZHANG Zheng-rong1, SU Mao-gen2, SUN Dui-xiong2*， DONG Chen-zhong2
1. School of Electronic and Information Engineering, Lanzhou City University，Lanzhou 730070，China
2. Key Laboratory of Atomic and Molecular Physics & Functional Materials of Gansu Province, College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China
Abstract：Ar plasma was produced by using 1 064 nm laser at atmospheric pressure, the emission spectrum was measured, and 35 Ar Ⅰ and Ar Ⅱ emission lines from the 15 upper levels were selected to make calibration for spectrometer response based on the branch ration method. In addition, the intensity response of the spectrometer was calibrated by using deuterium lamp and tungsten halogen standard light source. The calibration coefficients of intensity response for spectrometers with different gratings were obtained. The calibration coefficient of the intensity response obtained by the branch ratio method was in good agreement with that by the standard light source, and the maximum relative error is 5.4%. The calibration method in this paper can be used as a reference for the on-line calibration of spectral measurements in some large-scale fusion devices.
Key words：Branching ratio method；Laser produced plasma；Spectrometer；Calibration of intensity response
马云云，王永强，敏 琦，曹世权，张正荣，苏茂根，孙对兄，董晨钟. 基于Ar分支比方法的光谱强度响应效率标定研究[J]. 光谱学与光谱分析, 2018, 38(05): 1375-1379.
MA Yun-yun, WANG Yong-qiang, MIN Qi, CAO Shi-quan, ZHANG Zheng-rong, SU Mao-gen, SUN Dui-xiong， DONG Chen-zhong. Relative Spectral Intensity Response Calibration of Spectrometers Using Ar Plasma Emission Branching Ratio Method. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2018, 38(05): 1375-1379.
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