NO_2分子505-520nm区激光诱导荧光激发谱的转动分析  

THE ROTATIONALLY ANALYSES OF THE EXCITATION SPECTRUM OF NO_2 IN THE RANGE 505～520nm AT ROOM TEMPERATURE WITH LASER-INDUCED FLUORESCENCE

作　　者：崔执凤[1] 陈东[2] 凤尔银[1] 季学韩[1] 陆同兴[1] 李学初[3] 

机构地区：[1]安徽师范大学物理与电子信息学院,安徽芜湖241000 [2]华东冶金学院自动化系,安徽马鞍山243002 [3]中国科学院大连化学物理研究所,辽宁大连116023

出　　处：《安徽师范大学学报（自然科学版）》2000年第3期219-223,共5页Journal of Anhui Normal University(Natural Science)

基　　金：国家自然科学基金资助课题!(批准号 :9873 0 5 1);校专项基金资助课题

摘　　要：实验测定了室温下NO2 分子 50 5～ 52 0nm区域高分辨激光诱导荧光激发谱 ,在 50 5～ 52 0nm范围内标识了 10个振动带 ,并作了转动分析 ,得到了相应的带头位置、转动常数和旋 转耦合常数等 ,发现了 4个新的振动带 ,对振动带的转动分析结果表明 ,所有得到分析的谱线均属于平行跃迁 X1A1- A2 B2 ,电子激发态 A2 B2 与基态 X2 A1高振动能级之间存在强烈的相互作用 .The high resolution fluorescence excitation spectrum was measured in the range 505～520nm at room temperature. We had determined the molecular constants such as band origins and rotational and spin rotation constants for 10 vibronic bands in the two most intense absorption region 505～510nm and 512～520nm. Among the vibronic bands assigned there were 4 new bands reported firstly. All rotational structures analyzed are of the parallel type. It was shown from the experiment that there are strong interactions between the high lying vibration levels of ground state 2A 1 and the electronic excited state 2B 2.

关 键 词：激光诱导荧光激发谱 转动分析 二氧化氮分子 

分 类 号：O561.3[理学—原子与分子物理]