Chemiluminescent spectra of YbF and YbCl
Chemiluminescent spectra of YbF and YbCl
复制标题
YbF 和 YbCl 的化学发光光谱
DOI：
10.1016/0022-2852(77)90263-6
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发表时间：
1977
影响因子：
1.4
通讯作者：
R. Zare
中科院分区：
文献类型：
--
作者：
Henry U. Lee;R. Zare
我们通过镱与氟以及镱与二氧化氯在束气条件下和高压（3托）流系统中的反应获得了YbF和YbCl的化学发光光谱。观测到的能带系统比迄今为止报道的要广泛得多，并对地面和低洼态进行了振动再分析。虽然 YbCl 中的 A-X 和 B-X 系统显得规则，但 YbF 中的 A 2 Π 1 2-X 2 Σ+ 和 B-X 系统表现出广泛的振动扰动。据信，由分离原子 Yb (5d)+ X (np) 以及 Yb (6p)+ X (np) 产生的分子态之间的相互作用导致了这些扰动。在 YbF 和 YbCl 的发射中观察到未指定的红带系统，这表明最低激发态不是 A 态。
We have obtained the chemiluminescent spectra of YbF and YbCl from the reactions of ytterbium with fluorine and ytterbium with chlorine dioxide under beam-gas conditions and in a high-pressure (3 Torr) flow system. Much more extensive band systems are observed than hitherto reported, and a vibrational reanalysis of the ground and low-lying states is made. Although the A-X and B-X systems appear regular in YbCl, the A 2 Π 1 2-X 2 Σ+ and B-X systems in YbF exhibit extensive vibrational perturbations. The interaction between molecular states arising from the separated atoms Yb (5d)+ X (np) as well as Yb (6p)+ X (np) is believed to cause these perturbations. An unassigned red-band system is observed in emission for both YbF and YbCl, suggesting that the lowest-lying excited state is not the A state.