以皮秒Nd:YAG激光器的3倍频输出(355nm)泵浦光学参量产生/放大器(OPG/OPA),由其输出的514.5 nm的激光作为激发源,在室温下,对NO2分子在低气压情况下进行了激光诱导荧光研究.获得了在530～680 nm范围内的振动序列,将其归属为由第1电子激发态A2B2态向基电子态X2A1态不同振动态的跃迁,由此得到对称振动模式和角振动模式的谐振频率,分别为ω1=1 309.17 cm-1和ω2=747.05 cm-1.
[1] 崔执凤, 陈东, 凤尔银, 季学韩, 陆同兴, 李学初, CUI ZHI-FENG, CHEN DONG, FENG ER-YIN, JI XUE-HAN, LU TONG-XING, LI XUE-CHU. 激光诱导NO2分子500-532nm区荧光激发谱的实验研究 [J]. 物理学报 2000.doi:10.3321/j.issn:1000-3290.2000.11.008
[2] DELON A, JOST R. Laser induced dispersed fluorescence spectroscopy of 107 vibronic levels of NO2 ranging from 12 000 to 17 600 cm- 1 [J]. Journal of Chemical Physics 2001, 114(01).
[3] Kirmse B., Jost R., Delon A.. The NO2 vibronic levels near the X(2)A(1)-A(2)B(2), conical intersection observed by laser induced dispersed fluorescence [J]. The Journal of Chemical Physics 1998, 16(16).
[4] DELON A, JOST R. The NO2 vibronic levels near the NO2 X2A1 -A2B2 conical intersection: Jet cooled laser induced fluorescence between 11 680 and 13 900 cm- 1 [J]. Journal of Chemical Physics 1999, 110(09).
[5] Lievin J., Jost R., Delon A.. Absorption cross section of NO2 by the reflection method from ab initio calculations involving the three low lying electronic states [J]. The Journal of Chemical Physics 1998, 21(21).
[6] Gillispie G D, KHAN A U. The electronic structure of nitrogen dioxide. Ⅰ. Multiconfiguration self-consistent-field calculation of the low-lying electronic states [J]. Journal of Chemical Physics 1975, 63(08).
[7] Herzberg G. Molecular spectra and molecular structure. Ⅲ. Electronic spectra and electronic structure of polyatomic molecules [M]. New York: Van Nostrand Reinhold Company 1953.
[8] DONNELLY V M, KEIL D G, KAUFMAN. Fluorescence lifetime studies of NO2. Ⅲ. Mechanism of fluorescence quenching [J]. Journal of Chemical Physics 1979, 71(02).
