高温CO_2气体发射光谱展宽效应的精细光谱研究  

High resolution spectrum measurement for broadening effect of high temperature CO_2's emission spectra

作　　者：闫鹏 常胜利[2] 秦祖军[1] 熊显名[1] 张文涛[1] YAN Peng;CHANG Shengli;QINZujun;XIONG Xianming;ZHANG Wentao(School of Electronic Engineering and Automation, Guilin University of Electronic Technology, Guilin 541004, China;College of Science, National University of Defense Technology, Changsha 410073, China)

机构地区：[1]桂林电子科技大学电子工程与自动化学院,广西桂林541004 [2]国防科技大学理学院,长沙410073

出　　处：《桂林电子科技大学学报》2018年第2期134-138,共5页Journal of Guilin University of Electronic Technology

基　　金：国家高技术研究发展计划(863计划);国家科技支撑计划社会公共安全领域课题(703)

摘　　要：为了研究温度对气体谱线特性的影响,并确定高温气体发射光谱的精细展宽机制,通过构建变温气体池系统,控制CO_2气体的温度。利用超高分辨傅里叶变换光谱仪(Bruker 125HR),测量高温下CO_2气体谱线图,对谱线进行3种展宽机制的拟合比较。实验结果表明,Lorentz线型的拟合度最高为0.993 94,从而确定了高温气体发射光谱展宽机制为洛伦兹展宽,为遥测光谱技术进行远距离气体探测提供了实验支持。In order to study the effect of temperature on gas spectral characteristics and to determine the fine broadening mechanism of high temperature gas emission spectra,a variable temperature gas pool system is designed in which the temperature of CO2 gas is controlled.CO2 gas spectrum at high temperature is measured by using the ultra-high resolution Fourier transform spectrometer（Bruker 125 HR）.Then the fitting of the three broadening mechanisms is compared with the spectral lines.The result shows that the fit of Lorentz line is up to 0.99394,it is concluded that the broadening mechanism of the high temperature gas emission spectrum is Lorentz broadening,which provides experimental support for telemetry spectroscopy for long distance gas detection.

关 键 词：精细光谱 CO2 光谱展宽 Lorentz线型 

分 类 号：O433.1[机械工程—光学工程]