NO_2分子~2B_2电子激发态荧光辐射寿命的实验研究  

An experimental study of radiative lifetime of ~2B_2 electronic excited state of NO_2

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243002 [3]中国科学院大连化学物理研究所分子反应动力学国家重点实验室,辽宁大连116023

出　　处：《原子与分子物理学报》2000年第4期569-575,共7页Journal of Atomic and Molecular Physics

基　　金：国家自然科学基金!(批准号 :98730 5 1)资助课题;校专项基金资助课题

摘　　要：采用准分子激光泵浦的染料激光诱导的高分辨荧光技术 ,测定了NO2 分子 A2 B2 电子激发态的荧光辐射寿命及其与激发波长、NO2 分子气体压力之间的关系 ,结果表明荧光衰减曲线是单指数的 ,辐射寿命在 2 0 .4 4～ 72 .53μs之间变化 ,利用光谱涨落统计理论对 A 2 B2 电子态的反常长寿命进行了讨论。Using the method of laser induced high resolution fluorescence by excimer laser pumped dye laser, the radiative lifetimes of the 2B 2 electronic excited state of NO 2 and its relationship with NO 2 pressure and excitation wavelength were measured. The fluorescence decay was mono exponential and the value of the radiative lifetime varied between 20.44 μs and 72.53 μs. The apparently anomalously long lifetime of the 2B 2 state was discussed using spectral fluctuation statistical analysis theory.

关 键 词：荧光辐射寿命 电子激发态 二氧化氮分子 

分 类 号：O561.4[理学—原子与分子物理]