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THE HIGH RESOLUTION INFRARED SPECTRUM OF THE LOWER WAVENUMBER BANDS OF $^{34}$SO$_2$

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/33220

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Title: THE HIGH RESOLUTION INFRARED SPECTRUM OF THE LOWER WAVENUMBER BANDS OF $^{34}$SO$_2$
Creators: Lafferty, W. J.; Flaud, J.-M.; Sams, R. L.; Ngom, El Hadji Abib
Issue Date: 2008
Abstract: The infrared spectrum of sulfur dioxide becomes of importance after volcanic eruptions in which large amounts of SO$_2$ are emitted into the atmosphere. While the spectrum of the normal species, $^{32}$SO$_2$, has been very well studied and an excellent set of molecular constants obtained, this is not the case for the rarer isotopic species, $^{34}$SO$_2$, the abundance of which is about 4.2\% of the normal species. In order to improve our knowledge of the $^{34}$SO$_2$ spectrum we have studied a sample of SO$_2$ enriched to 95\% in $^{34}$S over a wavenumber region including all the fundamental bands, the relatively strong combination bands $\nu_2$+$\nu_3$ and $\nu_1$+$\nu_3$ as well as the weaker 2$\nu_1$+$\nu_3$ and 2$\nu_3$ bands. The resolution was 0.0019 cm$^{-1}$. The two lowest hot bands of the bending mode, $\nu_2$, have also been assigned as well as the hot bands of the other two fundamental bands and the $\nu_1$+$\nu_2$+$\nu_3$-$\nu_2$ band. The spectroscopic constants obtained will be presented.
URI: http://hdl.handle.net/1811/33220
Other Identifiers: 2008-TE-04
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