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Terahertz spectroscopy of hydrogen sulfide

Azzam, AAA; Yurchenko, SN; Tennyson, J; Martin-Drumel, M-A; Pirali, O; (2013) Terahertz spectroscopy of hydrogen sulfide. Journal of Quantitative Spectroscopy and Radiative Transfer , 130 pp. 341-351. 10.1016/j.jqsrt.2013.05.035. Green open access

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Abstract

Pure rotational transitions of hydrogen sulfide (H2S) in its ground and first excited vibrational states have been recorded at room temperature. The spectrum comprises an average of 1020 scans at 0.005 cm−1 resolution recorded in the region 45–360 cm−1 (1.4 to 10.5 THz) with a globar continuum source using a Fourier transform spectrometer located at the AILES beamline of the SOLEIL synchrotron. Over 2400 rotational lines have been detected belonging to ground vibrational state transitions of the four isotopologues H232S, H233S, H234S, and H236S observed in natural abundance. 65% of these lines are recorded and assigned for the first time, sampling levels as high as J=26 and Ka=17 for H232S. 320 pure rotational transitions of H232S in its first excited bending vibrational state are recorded and analysed for the first time and 86 transitions for H234S, where some of these transitions belong to new experimental energy levels. Rotational constants have been fitted for all the isotopologues in both vibrational states using a standard effective Hamiltonian approach. Comprehensive comparisons are made with previously available data as well as the data available in HITRAN, CDMS, and JPL databases. The 91 transitions assigned to H236S give the first proper characterization of its pure rotational spectrum.

Type: Article
Title: Terahertz spectroscopy of hydrogen sulfide
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.jqsrt.2013.05.035
Publisher version: https://doi.org/10.1016/j.jqsrt.2013.05.035
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: Science & Technology, Physical Sciences, Technology, Optics, Spectroscopy, Spectroscopy, Hydrogen Sulfide, Line Assignments, Atmospheric Physics, Planetary Atmospheres, Rotational Spectrum, Molecular-Spectroscopy, Hyperfine Structure, Microwave-Spectrum, Cologne Database, Millimeter-Wave, Ground-State, H2S, Region, Transitions
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/1399211
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