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Title:HIGH PRECISION SPECTRUM OF THE SECOND OVERTONE OF 12C16O
Author(s):Liu, An-Wen
Contributor(s):Hu, Shui-Ming; Sun, Yu Robert; Wang, Jin
Subject(s):Fundamental interest
Abstract:CO is the second most abundant molecule in the universe. Precise spectrum of the carbon monoxide molecule is great importance in astrophysical observation and in the test of the quantum chemistry model. Thirty-nine ro-vibrational transitions of $^{12}$C$^{16}$O in the second overtone band were measured by a comb-locked cavity ring-down spectrometer. The line positions were determined with kHz accuracy, or relatively 10$^{-12}$ level, which is over two orders of magnitude more accurate than previous Doppler-limited studies. Comparisons of the line positions determined in this work with literature experimental values and the calculations by the Dunham-Watson model are given. The bond length in the second overtone vibrational state was determined for carbon monoixde. The calculated pure rotational line positions agree with the experimental values recorded by lamb-dip spectrometer within the experimental uncertainties.
Issue Date:06/22/18
Publisher:International Symposium on Molecular Spectroscopy
Citation Info:APS
Genre:Conference Paper / Presentation
Type:Text
Language:English
URI:http://hdl.handle.net/2142/100556
DOI:10.15278/isms.2018.FD02
Other Identifier(s):FD02
Date Available in IDEALS:2018-08-17
2018-12-12


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