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 Title: Electronic Transitions Of Scandium Monoxide Author(s): Wang, Na Contributor(s): Cheung, Allan S.C.; Ng, Yuk Wai Subject(s): Metal containing Abstract: The electronic transition spectrum of scandium monoxide (ScO) in the spectral region between 290 and 311 nm has been recorded using laser ablation/reaction free-jet expansion and laser induced fluorescence spectroscopy. The ScO molecule was produced by reacting laser-ablated yttrium atoms with O$_{2}$ gas seeded in argon. Twenty transition bands were observed and thirteen of them have been selected for further studied by optical-optical double resonance (OODR) spectroscopy. Higher-lying electronic excited states have been reached via the intermediate B$^{2} \Sigma^{+}$ state from the ground X$^{2} \Sigma^{+}$ state. Our analysis indicates that the upper states conform to Hund’s case (c) coupling scheme, the sub-states analyzed so far have $\Omega$ = 0.5 and 1.5. In addition, for the first time, a quartet state namely $^{4} \Sigma^{+}$ state has been identified experimentally. Least squares fits of the measured rotational lines yield molecular constants for the newly identified excited states. Issue Date: 2014-06-17 Publisher: International Symposium on Molecular Spectroscopy Citation Info: Wang, N.; Cheung, A.S.; Ng, Y.W. ELECTRONIC TRANSITIONS OF SCANDIUM MONOXIDE. Proceedings of the International Symposium on Molecular Spectroscopy, Urbana, IL, June 16-21, 2014. DOI: 10.15278/isms.2014.TK03 Genre: CONFERENCE PAPER/PRESENTATION Type: Text Language: English URI: http://hdl.handle.net/2142/51096 DOI: https://doi.org/10.15278/isms.2014.TK03 Rights Information: Copyright 2014 by the authors. Licensed under a Creative Commons Attribution 4.0 International License. http://creativecommons.org/licenses/by/4.0/ Date Available in IDEALS: 2014-09-172015-04-14
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