Bichromatic Photoassociation Spectroscopy for the Determination of Rotational Constants of Cs(2) 0 u + Long-Range State below the 6S(1/2) + 6P(1/2) Asymptote.
Bichromatic Photoassociation Spectroscopy for the Determination of Rotational Constants of Cs(2) 0 u + Long-Range State below the 6S(1/2) + 6P(1/2) Asymptote.
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双色光缔合光谱法测定 6S1/2 6P1/2 渐近线以下 Cs2 0 u 长程态的旋转常数
DOI：
10.3390/molecules25173963
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发表时间：
2020-08-31
期刊：
影响因子：
--
通讯作者：
Sovkov VB
中科院分区：
文献类型：
--
作者：
Wu J;Ma J;Li Y;Liu W;Li P;Sovkov VB
This article demonstrates new observation of the high-resolution ro-vibrational bichromatic photoassociation spectra (BPAS) of Cs2 in the long-range state below the asymptotes 6S1/2 + 6P1/2. By combining with a modulation spectroscopic technique, precise references of the frequency differences have been engineered through the BPAS, with which the rotational constants of low-lying vibrational levels of the Cs2 long-range state have been accurately determined by fitting the frequency differences to the non-rigid-rotor model. The rotational constants for the newly observed seven ro-vibrational levels are summarized and disagreement for the level ῦ = 498 is clarified. The rotational constants of different vibrational levels demonstrate strong perturbations of the related energy structures. A simple analysis is performed and shows good agreement with experimental results.
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