### Abstract

The rotational structure of the (111) and (021) vibrational states is determined for the first time from the high resolution analysis of the ν_{1}+ν_{2}+ν_{3}−ν_{2} and 2ν_{2}+ν_{3}−ν_{2} “hot” bands. The 480 and 74 transitions of these bands (J^{max}/K_{a} ^{max} = 45/14 and 15/12 respectively) were assigned in the spectra, which have been recorded with the Bruker IFS 120 Fourier transform infrared (FTIR) spectrometer. A weighted fit analysis allowed us to generate a set of 5 fitted parameters for the (111) state and 4 fitted parameters for the (021) state. Calculation with the 9 parameters, obtained from the fit, reproduces the initial 363 energy values (about 550 assigned experimental transitions) of two vibrational states with the d_{rms} deviations of 3.2×10^{−4} cm−1, which is comparable with the experimental uncertainties of very weak transitions of the ν_{1}+ν_{2}+ν_{3}−ν_{2} and 2ν_{2}+ν_{3}−ν_{2} “hot” bands in our experiment.

Original language | English |
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Pages (from-to) | 98-103 |

Number of pages | 6 |

Journal | Journal of Quantitative Spectroscopy and Radiative Transfer |

Volume | 202 |

DOIs | |

Publication status | Published - 1 Nov 2017 |

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### Keywords

- SOO molecule
- Determination of parameters
- “Hot” bands

### ASJC Scopus subject areas

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

### Cite this

^{16}O

^{18}O from the “hot” ν

_{1}+ν

_{2}+ν

_{3}−ν

_{2}and 2ν

_{2}+ν

_{3}−ν

_{2}bands.

*Journal of Quantitative Spectroscopy and Radiative Transfer*,

*202*, 98-103. https://doi.org/10.1016/j.jqsrt.2017.07.029