Analysis of highly excited 'hot' bands in the SO2 molecule: 2v2 + 3v3 - 2v1 and 2v1 + v 2 + v3 - v2

O. N. Ulenikov, E. S. Bekhtereva, O. V. Gromova, S. Alanko, V. M. Horneman, C. Leroy

Research output: Contribution to journalArticle

43 Citations (Scopus)

Abstract

We set up a variational procedure of assignments of transitions and we applied it to the analysis very weak 'hot' bands, 2 + 33 - 2 and 21 + 2 + 3 - 2, of the SO2 molecule. As the first step of the study, the 'cold' bands, 33 and 21 + 3, are re-analysed and transitions belonging to those bands are assigned up to the values of quantum numbers Jmax. = 60, [image omitted], and Jmax. = 69, [image omitted] for the bands 33 and 21 + 3, respectively. After 'cleaning' the experimental spectrum from transitions belonging to the 33 and 21 + 3 bands, a variational procedure was used that allowed us to assign 230 and 115 transitions with the values of quantum numbers Jmax. = 35, [image omitted], and Jmax. = 26, [image omitted] for the bands 2 + 33 - 2 and 21 + 2 + 3 - 2, respectively. The sets of spectroscopic parameters obtained by fitting the assigned experimental transitions reproduce the initial experimental data with an accuracy close to experimental uncertainties.

Original languageEnglish
Pages (from-to)1253-1261
Number of pages9
JournalMolecular Physics
Volume108
Issue number10
DOIs
Publication statusPublished - 1 Jan 2010

Keywords

  • High-resolution spectra
  • Spectroscopic parameters
  • Sulphur dioxide

ASJC Scopus subject areas

  • Biophysics
  • Molecular Biology
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

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