Rotational and hyperfine analysis of the D2Π1/2-X2Δ3/2 (0,0) band of TaO
Rotational and hyperfine analysis of the D2Π1/2-X2Δ3/2 (0,0) band of TaO
复制标题
TaO 的 D2Î 1/2-X2Î3/2 (0,0) 带的旋转和超精细分析
DOI：
10.1016/j.jms.2022.111666
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发表时间：
2022
影响因子：
1.4
通讯作者：
Varberg, Thomas D.
中科院分区：
文献类型：
--
作者：
Tovar, Kevin A.;Varberg, Thomas D.
通过记录位于6 96 nm附近的(0，0)带的激光激发光谱，首次分析了TAO的D2Π1/2-X2Δ3/2跃迁。这个乐队是许多年前由Cheetham和Barrow(Trans.Faraday Soc.63(1967)1835-1845)，由于密集的旋转结构，他没有进行分析。光谱显示了由181Ta核产生的广泛的超精细结构，该结构在实验的多普勒有限分辨率下得到了很好的分辨。用有效的哈密顿量对数据进行了拟合，确定了上态对称性为2Π1/2，并得到了一组描述其转动和超精细结构的精确分子常数。
Abstract The D 2 Π 1/2-X 2 Δ 3/2 transition of TaO has been analyzed for the first time by recording a laser excitation spectrum of its (0, 0) band, which lies near 696 nm. This band was first observed many years ago by Cheetham and Barrow (Trans. Faraday Soc. 63 (1967) 1835–1845), who did not undertake an analysis due to the dense rotational structure. The spectrum displays broad hyperfine structure arising from the 181 Ta nucleus that is well resolved at the Doppler-limited resolution of the experiment. The data were fitted using an effective Hamiltonian expressed in a Hund’s case (c) basis, confirming the upper state symmetry as 2 Π 1/2 and yielding an accurate set of molecular constants describing its rotational and hyperfine structure.