Barton, EJ;
Polyansky, OL;
Yurchenko, SN;
Tennyson, J;
Civiš, S;
Ferus, M;
Hargreaves, R;
... Campargue, A; + view all
(2017)
Absorption spectra of ammonia near 1μm.
Journal of Quantitative Spectroscopy and Radiative Transfer
, 203
pp. 392-297.
10.1016/j.jqsrt.2017.03.042.
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Abstract
An ammonia absorption spectrum recorded at room temperature in the region 8800–10,400 cm−1 is analysed using a variational line list, BYTe, and ground state energies determined using the MARVEL procedure. BYTe is used as a starting point to initialise assignments by combination differences and the method of branches. Assignments are presented for the region 9400–9850 cm−1. 642 lines are assigned to 6 previously unobserved vibrational bands, View the MathML source, View the MathML source and View the MathML source, leading to 428 new energy levels with 208 confirmed by combination differences. A recently calculated purely ab initio NH3 PES is also used to calculate rovibrational energy levels. Comparison with assigned levels shows better agreement between observed and calculated levels than for BYTe for higher vibrational bands.
| Type: | Article |
|---|---|
| Title: | Absorption spectra of ammonia near 1μm |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.jqsrt.2017.03.042 |
| Publisher version: | http://doi.org/10.1016/j.jqsrt.2017.03.042 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| 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/1553552 |
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