排序方式: 共有5条查询结果,搜索用时 156 毫秒
1
1.
A combined cavity ringdown (CRD) and laser induced fluorescence (LIF) spectroscopic study on the A1∑+-X1∑+ transition of CuH has been presented.The CuH molecule,as well as its deuterated isotopologue CuD,are produced in a supersonic jet expansion by discharging H2(or D2) and Ar gas mixtures using two copper needles.Different profiles of relative line intensities are observed between the measured LIF and CRD spectra,providing an experimental evidence for the predissociation behavior in the A1∑+ state of CuH.The lifetimes of individual upper rotational levels are measured by LIF,in which the J''-dependent predissociation rates are obtained.Based on the previous theoretical calculations,a predissociation mechanism is concluded due to the strong spin-orbit coupling between the A1∑+ state and the lowest-lying triplet 3∑+ state,and a tunneling effect may also be involved in the predissociation.Similar experiments are also performed for CuD,showing that the A1∑+ state of CuD does not undergo a predissociation process. 相似文献
2.
本文利用激光诱导荧光技术对AgO分子C2∏-X2∏(0,0)带光谱在∽0.02 cm-1分辨率水平开展了高分辨研究. 在超声射流条件下利用银针电极对O2/Ar混合气高压放电制备AgO分子,利用自行研制的窄线宽单纵模光参量振荡器作为可调谐激光光源,实验记录了同位素分辨的107Ag16O和109Ag16O分子C2∏-X2∏(0,0)带的高分辨光谱. 通过对实验光谱的转动分析获得了两个同位素分子的精确光谱常数,其中107Ag16O分子C2∏态常数为首次实验测定. 结合文献和理论计算,实验观测的C2∏态自旋-轨道耦合效应很可能来自于与四重解离态4Σ-或4∏的态混合. 相似文献
3.
4.
5.
1