Intensities of all fine-structure resolved rovibrational electric quadrupole absorption lines in ${}^{16}$O${}_2$($X^3{\Sigma }_g^{-}$) calculated with a new $\text{ab initio}$ quadrupole moment curve

Abstract

The intensities of all rovibrational electric quadrupole absorption lines in ${}^{16}$O${}_2$($X^3{\Sigma }_g^{-}$), for which the vibrational quantum number is $v\le 35$ and the total angular momentum quantum number is $J\le 40$, are calculated in the intermediate coupling using a new $\text{ab initio}$ quadrupole moment curve of the ground electronic state of O${}_2$. The calculated values agree with those available in the HITRAN database, which at present includes only the $1$-$0$ fundamental vibrational band of ${}^{16}$O${}_2$($X^3{\Sigma }_g^{-}$). We therefore recommend using the intensities of the vibrational overtones and hot bands reported here in updating the HITRAN database for O${}_2$ in the upcoming 2024 edition.

arXiv commentRevised version submitted to "Journal of Quantitative Spectroscopy & Radiative Transfer". Supplementary material associated with this article can be found at doi https://doi.org/10.18150/JZDWVT