[Initial study of a new method for measuring the temperature of hot gas by FTIR spectrometry].
The present paper analyzed the molecular spectra theory detailedly and summarized the factors affecting the structure and intensity-distribution of molecular rotation-vibration spectra. The authors knew that every spectral line's relative intensity is only related to external temperature. According to this conclusion. The authors showed a new method for measuring the temperature of hot gas by FTIR spectrometry. The authors established a database for measuring the temperature-database using the database of HITRAN. The authors calibrated and validated the database using four experimental spectral data at different temperatures. After calibration, the result was very good. Compared with molecular rotation-vibration emission spectra method and maximum spectral line intensity method, this method has many advantages: simple physical-contents, easy calculation (done by a C program), high precision etc. It was a simple and applied method.
Liu
Zhi-Ming
ZM
Key Lab of Environment Optics & Technology, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China. zhimingliu@aiofm.ac.cn
Gao
Min-Guang
MG
Liu
Wen-Qing
WQ
Zhang
Tian-Shu
TS
Xu
Liang
L
Wei
Xiu-Li
XL
Chen
Hua
H