摘要
用准分子激光抽运可调谐染料窄带激光测定了室温下NO2 分子 5 0 0— 5 32nm区高分辨荧光激发谱 ,在两个较强吸收区 5 0 5— 5 10nm和 5 13— 5 2 0nm范围内标识了 2 5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 转偶合常数等分子光谱常数 ,在 2 5个振动带中有 5个谱带是新发现的 ,所有得到转动分析的谱线均属于平行跃迁X～ 2 A1—A～2 B2 ,对实验结果的分析表明电子激发态A～ 2B2 受到基态X～ 2
The high\|resolution fluorescence excitation spectrum was measured in the region of 500—532?nm at room temperature.Though the spectrum was rather congested,we could determine the molecular constants such as band origins and rotational and spin\|rotation constants for 25 vibronic bands in the two most intense absorption regions 505—510?nm and 513—520?nm.Among the vibronic bands assigned there were 5 new bands observed and reported in this work.All rotational structures analyzed were of the parallel type.It was shown from the experiment that the high lying vibration levels of ground state X ～ 2A 1 had heavily perturbed the electronic excited state A ～ 2B 2.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2000年第11期2151-2158,共8页
Acta Physica Sinica
基金
国家自然科学基金 !(批准号 :9873 0 5 1)
安徽师范大学专项基金资助的课题&&
关键词
激光诱导荧光激发谱
二氧化氮分子
实验
laser induced fluorescence excitation spectrum, vibronic band, rotationally analyses
