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Re-analysis of the 000 – 000 and 000 – 100 bands in the A2Π1/2-X2Σ+ system of YbOH: revised estimates of the ground state spin-rotation splitting parameters
Journal of Molecular Spectroscopy ( IF 1.4 ) Pub Date : 2020-01-01 , DOI: 10.1016/j.jms.2019.111242
J.A. Coxon , C. Linton

Abstract In the first observed spectrum (Melville and Coxon, 2001) of the 000 – 000 band of the A 2 Π 1 / 2 - X 2 Σ + transition of YbOH, spin-doublets were resolved only at high-N and yielded a ground state spin-rotation constant, γ, that differs in both sign and magnitude from that obtained from recent higher resolution low–N data (Steimle and co-workers, 2018–2019). This note re-examines the original 2001 data and shows that the discrepancy is resolved by rearrangement of the original Q11 and R12 branch and isotopologue assignments of the 000 – 000 origin band. Re-analysis of the 000 – 100 band results in a revised negative γ for the υ1 = 1 (Yb-O stretch) level of the X 2 Σ + state which is close to that obtained from the 2018–2019 data.

中文翻译:

重新分析 YbOH 的 A2Π1/2-X2Σ+ 系统中的 000 – 000 和 000 – 100 波段:基态自旋-旋转分裂参数的修正估计

摘要 在 YbOH 的 A 2 Π 1 / 2 - X 2 Σ + 跃迁的 000 – 000 波段的第一个观测光谱(Melville 和 Coxon,2001 年)中,自旋双峰仅在高 N 处分辨,并产生了一个基状态自旋旋转常数 γ 在符号和幅度上与从最近的高分辨率低 N 数据(Steimle 和同事,2018-2019)中获得的值不同。本说明重新检查了 2001 年的原始数据,并表明通过重新排列原始 Q11 和 R12 分支以及 000 – 000 原始波段的同位素体分配解决了差异。对 000 – 100 波段的重新分析导致 X 2 Σ + 状态的 υ1 = 1(Yb-O 拉伸)水平的修正负 γ 值与从 2018-2019 年数据中获得的值接近。
更新日期:2020-01-01
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