NO_2 分子 51 9～ 52 4nm区的激光诱导荧光激发谱  

Laser-induced fluorescence excitation spectrum of NO_2 in the region 519～524 nm at room temperature

作　　者：崔执凤[1] 陈东[2] 凤尔银[1] 季学韩[1] 周士康[3] 

机构地区：[1]安徽师范大学物理系光谱与材料研究室,安徽芜湖241000 [2]华东冶金学院自动化系,安徽马鞍山240032 [3]中国科学院安徽光学精密机械研究所激光光谱开放实验室,安徽合肥230031

出　　处：《原子与分子物理学报》2001年第2期153-158,共6页Journal of Atomic and Molecular Physics

基　　金：国家自然科学基金! (2 98730 5 1);安徽师范大学专项基金&&

摘　　要：实验测定了室温下NO2 分子在 5 19～ 5 2 4nm区域的高分辨激光诱导荧光激发谱 ,标识了 2 5个振动带 ,并作了转动分析 ,确定了这些带的带源、转动常数以及旋 转偶合常数等分子常数 ,其中有 8个振动带是新发现的 ,对振动带的转动结构分析表明 ,所有得到转动标识的谱线均属于平行跃迁2 B2 - ～X2 A1,其中上振动能级具有B2 对称类是由于电子激发态 ～A2 B2 与电子基态的振动能级之间的强烈相互作用所致。The high resolution fluorescence excitation spectrum was measured in the region 519～524 nm at room temperature. Though the spectrum is rather congested, we determined the molecular constants such as band origins and rotational and spin rotation constants for 25 vibronic bands in the this region. Among the vibronic bands assigned there were 8 new bands reported firstly. All rotational structures analyzed are of the parallel type. It was shown from the experiment that the high lying vibration levels of ground state AX～U6 2A 1 heavily perturbed the electronic excited state AA～U6 2B 2 .

关 键 词：振动带 转动分析 分子常数 激光诱导荧光激发谱 二氧化氮分子 谱线结构 

分 类 号：O561.3[理学—原子与分子物理]