High precision line parameters of N2O near 1.5μm by cavity ring-down spectroscopy

Liu, Gu-Liang

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https://hdl.handle.net/2142/100560 Copy

Description

Title

High precision line parameters of N2O near 1.5μm by cavity ring-down spectroscopy

Author(s)

Liu, Gu-Liang

Contributor(s)

• Liu, An-Wen
• Hu, Shui-Ming
• Hua, Tian-Peng
• Kang, Peng

Issue Date

2018-06-18

Keyword(s)

Linelists, Lineshapes, Collisions

Abstract

Accurate parameters of the N2O transitions in the 1.5µm region are needed for monitoring global N2O concentration in the atmosphere. The strongest band in this region is the 0003-0000 band. In HITRAN database, some parameters of this band are given by calculation, others are given by experiments but they are obtained by the Voigt profile, which is now well known can lead to significant deviations. The ro-vibrational transitions of the 0003-0000 band with line intensities in the order of 10−24 to 10−23cm−1 /(molecule·cm−2 ) have been recorded using a laser-locked cavity ring-down spectrometer with high sensitivity as well as high precision. The positions were determined with an uncertainty of sub-MHz. The line intensities and Nitrogen induced pressure broadening coefficients were also derived with accuracies better than 0.8% and 1%, respectively. Comparisons of the line parameters determined in this work with literature experimental values and those from HITRAN2016 database are given.

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

text

Language

eng

Permalink

http://hdl.handle.net/2142/100560

DOI

10.15278/isms.2018.MI06

Copyright and License Information

Copyright 2018 Gu-Liang Liu

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