期刊
CHEMICAL PHYSICS LETTERS
卷 789, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.cplett.2021.139326
关键词
Laser spectroscopy; Laser-induced fluorescence; Perturbation; Spin-orbit interaction; Spin-forbidden transition
资金
- [19K05374]
In this study, carbon monosulfide generated in a specific reaction was detected using laser-induced fluorescence, and its rotational structure was analyzed. The results show that the characteristics of rotational lines are influenced by the perturbation between vibrational levels.
Carbon monosulfide (CS) generated in the S(D-1) + CS2 -> CS(X-1 sigma(+)) + S2 reaction was detected with the laser-induced fluorescence via the A(1)Pi-X-1 sigma(+) transition. The rotational structure of the (0,0) vibrational band is considerably deformed by the perturbation between the vibrational levels v = 0 of A(1)Pi and v = 10 of a('3)sigma(+) states. Both the appearance wavelengths and peak intensities of many rotational lines are varied by the size of the perturbation. The precise assignment of the rotational lines of the spin-forbidden transition a('3)sigma(+)-X-1 sigma(+) (10,0) bands has been given. The observed spectrum was well-reproduced with higher accuracy than any previous analysis.
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