光谱学与光谱分析 |
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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 |
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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.
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Received: 2005-10-31
Accepted: 2006-02-15
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Corresponding Authors:
YAN Jian-hua
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Cite this article: |
TU Xin,YAN Jian-hua,MA Zeng-yi, et al. Measurement of Rotational and Vibrational Temperatures in Arc Plasma Based on the First Negative System of N+2(B2∑+u→X2∑+g) [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2006, 26(12): 2161-2165.
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URL: |
https://www.gpxygpfx.com/EN/Y2006/V26/I12/2161 |
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