1. 浙江大学热能工程研究所，能源清洁利用国家重点实验室，浙江 杭州 310027 2. UMR 6614 CNRS CORIA, Saint Etienne du Rouvray 76801, France
Measurement of Rotational and Vibrational Temperatures in Arc Plasma Based on the First Negative System of N＋2(B2∑＋u→X2∑＋g)
TU Xin1,2,YAN Jian-hua1*,MA Zeng-yi1,LI Xiao-dong1,PAN Xin-chao1,CEN Ke-fa1,CHERON Bruno2
1. Institute for Thermal Power Engineering，State Key Laboratory of Clean Energy Utilization，Zhejiang University，Hangzhou 310027，China 2. UMR 6614 CNRS CORIA，Saint Etienne du Rouvray 76801，France
Abstract：The molecular emission spectra lines of the first negative system N＋2(B2∑＋u→X2∑＋g) are frequently observed in the plasma source containing nitrogen. (0-0) and (1-1) N+2 first negative system molecular bands around 391.4 nm can be used to the measure the rotational and vibrational temperatures in a DC argon-nitrogen plasma at atmospheric pressure. The proposed method based on the comparison between this experimental emission spectrum and the computer simulated one is presented. The effect of the apparatus function, vibrational temperature and rotational temperatures on the line structure of numerical simulated spectrum is discussed. The results show that the electron temperature, rotational temperature, vibrational temperature and kinetic temperature of plasma arc are almost the same, which can be interpreted as that DC argon-nitrogen arc plasma at atmospheric pressure is in LTE under their experimental conditions.
Key words：Arc plasma;Optical diagnostics;Rotational temperature;Vibrational temperature
屠昕1,2,严建华1*,马增益1,李晓东1,潘新潮1,岑可法1,CHERON Bruno2 . 基于N+2(B2∑+u→X2∑+g)的电弧等离子体振动温度和转动温度测量 [J]. 光谱学与光谱分析, 2006, 26(12): 2161-2165.
TU Xin1,2,YAN Jian-hua1*,MA Zeng-yi1,LI Xiao-dong1,PAN Xin-chao1,CEN Ke-fa1,CHERON Bruno2 . Measurement of Rotational and Vibrational Temperatures in Arc Plasma Based on the First Negative System of N＋2(B2∑＋u→X2∑＋g) . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2006, 26(12): 2161-2165.
[1] Pfender E. Plasma Chemistry and Plasma Processing, 1999, 19(1)：1. [2] Bonizzoni G, Vassallo E. Vacuum, 2002, 64：327. [3] Laux C O, Gessman R J, Kruger C H，et al. Journal of Quantitative Spectroscopy and Radiative Transfer, 2001, 68：473. [4] LIU Li-ying, ZHANG Jia-liang, MA Teng-cai, et al(刘莉莹, 张家良, 马腾才, 等). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2002, 22(6)：1013. [5] XIE Xiao-bo, SUN Tao-heng(谢晓波，孙騊亨). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2001, 21(6)：737. [6] Herzberg G. Molecular Spectra and Molecular Structure Vol. 1: Spectra of Diatomic Molecules, Princeton. New Jersey: Van Nostrand Company Inc, 1950.
