High precision spectrum of the second overtone of 12C16O

Liu, An-Wen

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https://hdl.handle.net/2142/100556 Copy

Description

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

Issue Date

2018-06-22

Keyword(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 12C 16O 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.

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

text

Language

eng

Permalink

http://hdl.handle.net/2142/100556

DOI

10.15278/isms.2018.FD02

Copyright and License Information

Copyright 2018 An-Wen Liu

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