摘要
本文报道了在交叉分子束装置中氟原子和二氯甲烷以及氧原子和二氯乙烯分子反应生成CCl_2的激光诱导荧光光谱的实验结果。位于520-610nm范围内的激光诱导荧光色散谱由9个峰组成,被归属为CCl_2的A(4,0,0)→X(0,v_2″,0),(1,v_2″,0)的跃迁。从光谱导出基电子态的弯曲振动频率v_2″=337cm^(-1),对称拉伸频率v_1″=737cm^(-1),X_(12)″=-1.26cm^(-1),X_(22)″=2.86cm^(-1)。文章还分析了两个反应的反应通道。
The experimental spectrum of gas phase CCl_2 produced by the reaction of Fatom with CH_2Cl_2 and O atom with C_2HCl_3 is studied with laser dispersion fluo-rescence spectroscopy in a crossed molecular beam setup. Nine spectral peaksin the region of 520-610nm are assigned to A (4,0,0)→X (0, v_2″,0), (1, v_2″,0)transitions. The fundamental vibrational frequencies of the electronic groundstate of the bending mode and the symmetric stretching mode are derived fromthe spectrum to be v_2″=337cm^(-1) and v_1″=737cm^(-1) respectively, and the anhar-monicity constants are %_(12)″=-1.26cm^(-1), %_(22)″=-2.86cm^(-1). The reaction channelsare also discussed.
出处
《量子电子学》
CSCD
1993年第2期129-134,共6页
基金
国家自然科学基金
