Publication Abstracts

Ma and Boulet 2024

Ma, Q., and C. Boulet, 2024: Branch dependence of halfwidths: Theoretical analysis of N2-broadened halfwidths of CH3Br in the ν6 band. J. Quant. Spectrosc. Radiat. Transfer, 320, 108972, doi:10.1016/j.jqsrt.2024.108972.

The N2-broadened halfwidths of CH3Br in the ν6 band have been calculated, along with the relaxation matrices W. These calculations employ our modified and refined versions of the Robert-Bonamy formalism. Extensive comparisons between the predicted halfwidths from the models and experimental measurements at T = 296 K are presented. Our latest model very closely matches the measurements. Meanwhile, we considered line mixing effects in the spectral profile of the RQ(j,0) sub-branch. Our method probably yields too large values of the off-diagonal elements of W. Finally, by comparing our calculated halfwidths with the data in HITRAN, we have observed generally good agreement, especially for lines with high values of j. However, the agreement becomes poor for lines with low values of j, deteriorating as j decreases. We identified a factor contributing to this poor agreement: the neglect of branch dependence in the development of HITRAN data. We believe that for lines with low values of j, this oversight undermines the reliability of the halfwidth values of CH3Br in HITRAN.

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BibTeX Citation

@article{ma04810c,
  author={Ma, Q. and Boulet, C.},
  title={Branch dependence of halfwidths: Theoretical analysis of N2-broadened halfwidths of CH3Br in the ν6 band},
  year={2024},
  journal={Journal of Quantitative Spectroscopy and Radiative Transfer},
  volume={320},
  pages={108972},
  doi={10.1016/j.jqsrt.2024.108972},
}

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RIS Citation

TY  - JOUR
ID  - ma04810c
AU  - Ma, Q.
AU  - Boulet, C.
PY  - 2024
TI  - Branch dependence of halfwidths: Theoretical analysis of N2-broadened halfwidths of CH3Br in the ν6 band
JA  - J. Quant. Spectrosc. Radiat. Transfer
JO  - Journal of Quantitative Spectroscopy and Radiative Transfer
VL  - 320
SP  - 108972
DO  - 10.1016/j.jqsrt.2024.108972
ER  -

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