Study of highly excited ro-vibrational states of S18O2 from “hot” transitions: The bands ν123−ν2, 2ν12−ν2, and 2ν23−ν2

O. N. Ulenikov, O. V. Gromova, E. S. Bekhtereva, Yu B. Morzhikova, C. Maul, C. Sydow, S. Bauerecker

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Abstract

Transitions belonging to the three “hot” bands of the S18O2 molecule, ν123−ν2 (621 transitions with the values of quantum numbers Jmax=49 and Ka max=14), 2ν12−ν2 (332 transitions with Jmax=42 and Ka max=12) and 2ν23−ν2 (15 transitions with Jmax=14 and Ka=8 and 9), were assigned in the spectral 2100–2700 cm−1 region. This enabled for the first time to get high accurate values of 388, 185 and 13 ro-vibrational energies for the highly excited vibrational states (111), (210) and (021), respectively. A weighted fit analysis using the obtained ro-vibrational energies allowed us to generate a set of 20 fitted parameters which reproduce the initial 586 energy values (about 970 assigned experimental transitions) with the drms deviations of 1.9×10−4cm−1, 2.8×10−4 cm−1 and 2.5×10−4 cm−1 for the states (111), (210) and (021).

Original languageEnglish
Pages (from-to)159-164
Number of pages6
JournalJournal of Quantitative Spectroscopy and Radiative Transfer
Volume196
DOIs
Publication statusPublished - 1 Jul 2017

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Keywords

  • SO
  • High-resolution spectra
  • Spectroscopic parameters
  • Sulfur dioxide

ASJC Scopus subject areas

  • Radiation
  • Atomic and Molecular Physics, and Optics
  • Spectroscopy

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