利用电晕放电实验研究NO分子γ电子带系发射光谱  

Research on the Emission Spectrum of NO Molecule's γ-Band System by Corona Discharge

作　　者：翟晓东[1] 丁艳军[1] 彭志敏[1] 罗锐[1] 

机构地区：[1]清华大学热能工程系,电力系统及发电设备控制和仿真国家重点实验室,北京100084

出　　处：《光谱学与光谱分析》2012年第5期1153-1156,共4页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金项目(51176085)资助

摘　　要：基于NO分子的双重态能级结构特性,利用分子光谱理论分析和计算了NO分子γ带系(A2Σ+→X2Πr)的发射光谱,并通过电晕放电实验光谱进行验证。理论上计算了NO高低能级的双重电子态的能级分布,同时利用r质心近似法求取了能级间跃迁的电偶极矩函数,并得到了不同振动、转动能级间的爱因斯坦跃迁概率,然后计算出不同振动温度和转动温度条件下谱线的强度分布。最后进行NO和N2混合气体的电晕放电实验,通过将实验发射光谱同理论计算结果进行对比分析,确定了NO分子的振动温度和转动温度。The optical emission spectrum of the γ-band system of NO molecule,A2Σ＋→X2Πr,has been analyzed and calculated based on the energy structure of NO molecule＇ doublet states.By employing the theory of diatomic molecular Spectra,some key parameters of equations for the radiative transition intensity were evaluated theoretically,including the potentials of the doublet states of NO molecule＇s upper and lower energy levels,the electronic transition moments calculated by using r-centroid approximation method,and the Einstein coefficient of different vibrational and rotational levels.The simulated spectrum of the γ-band system was calculated as a function of different vibrational and rotational temperature.Compared to the theoretical spectroscopy,the measured results were achieved from corona discharge experiments of NO and N2.The vibrational and rotational temperatures were determined approximately by fitting the measured spectral intensities with the calculated ones.

关 键 词：NO分子 发射光谱 电晕放电 振转温度 

分 类 号：TK311[动力工程及工程热物理—热能工程]