The rotational spectrum of propynal in the 250–700 GHz range using coherent synchrotron radiation Fourier transform spectrometry

The Coherent Synchrotron radiation obtained at SOLEIL has allowed, for the first time, measurement of broad band absorption, Fourier Transform spectra in the sub-THz range at 0.001 cm -1 resolution, with a signal-to-noise ratio of 100 attained in a few hours. The technique has been applied to the ob...

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Bibliographic Details
Published in:Journal of molecular spectroscopy 2015-01, Vol.307, p.44-48
Main Authors: Barros, J., Appadoo, D., McNaughton, D., Robertson, E.G., Medcraft, C., Plathe, R., Roy, P., Manceron, L.
Format: Article
Language:English
Subjects:
Physics
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Summary:The Coherent Synchrotron radiation obtained at SOLEIL has allowed, for the first time, measurement of broad band absorption, Fourier Transform spectra in the sub-THz range at 0.001 cm -1 resolution, with a signal-to-noise ratio of 100 attained in a few hours. The technique has been applied to the observation of the pure rotational spectrum of propynal (HC≡CCHO) in the 250 -700 GHz range. The new data have allowed the determination of more precise values for rotational constants and for higher order rotational constants. The potential of the technique for rapid recording of rotational spectra in this energy range is outlined.
ISSN:0022-2852
1096-083X
DOI:10.1016/j.jms.2014.12.011