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A near infrared line list for NH3: Analysis of a Kitt Peak spectrum after 35 years

Barton, EJ; Yurchenko, SN; Tennyson, J; Béguier, S; Campargue, A; (2016) A near infrared line list for NH3: Analysis of a Kitt Peak spectrum after 35 years. Journal of Molecular Spectroscopy , 325 pp. 7-12. 10.1016/j.jms.2016.05.001. Green open access

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Abstract

A Fourier Transform (FT) absorption spectrum of room temperature NH3 in the region 7400 - 8600 cm-1 is analysed using a variational line list and ground state energies determined using the MARVEL procedure. The spectrum was measured by Dr Catherine de Bergh in 1980 and is available from the Kitt Peak data center. The centers and intensities of 8468 ammonia lines were retrieved using a multiline fitting procedure. 2474 lines are assigned to 21 bands providing 1692 experimental energies in the range 7000 - 9000 cm-1. The spectrum was assigned by the joint use of the BYTe variational line list and combination differences. The assignments and experimental energies presented in this work are the first for ammonia in the region 7400 - 8600 cm-1, considerably extending the range of known vibrational-excited states.

Type: Article
Title: A near infrared line list for NH3: Analysis of a Kitt Peak spectrum after 35 years
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.jms.2016.05.001
Publisher version: http://dx.doi.org/10.1016/j.jms.2016.05.001
Language: English
Additional information: Copyright © 2016 Elsevier Inc. All rights reserved. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
Keywords: Room temperature; Ammonia; Absorption intensities; FTIR spectroscopy; Experimental energies; BYTe; Line assignments
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/1492711
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