Publication Abstracts

Gamache et al. 2026

Gamache, R.R., B. Vispoel, C. Boulet, and Q. Ma, 2026: Modified and refined Robert-Bonamy calculations of half-widths of OCS in collision with N2, O2 and OCS. J. Quant. Spectrosc. Radiat. Transfer, 359, 109943, doi:10.1016/j.jqsrt.2026.109943.

Modified Robert-Bonamy (MRB) and Refined Robert-Bonamy (RRB) calculations of half-widths of OCS in collision with N2, O2, and OCS were made at 200 (215 for OCS-OCS), 250, 296, and 350 K for J" = 0 to 96 for the R-branch transitions of Σ-Σ vibrational bands. The MRB method correctly evaluates the average required in applying the cumulant expansion, which has the effect of greatly reducing the size of the matrices when line coupling is included in the calculations. In the RRB method, the isolated line approximation is not made, allowing the effects of line coupling to be included in the calculations as well as the calculation of the entire relaxation matrix, W, whose diagonal elements correspond to the calculated halfwidths. For each collision system, the atom-atom parameters were adjusted to give results in better agreement with measurement. Using the W-matrix, the first-order Rosenkranz coefficients were determined for each collision system. The temperature dependence of the RRB and MRB half-widths was determined for each transition of each collision system using the standard power law.

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BibTeX Citation

@article{ga02400q,
  author={Gamache, R. R. and Vispoel, B. and Boulet, C. and Ma, Q.},
  title={Modified and refined Robert-Bonamy calculations of half-widths of OCS in collision with N2, O2 and OCS},
  year={2026},
  journal={Journal of Quantitative Spectroscopy and Radiative Transfer},
  volume={359},
  pages={109943},
  doi={10.1016/j.jqsrt.2026.109943},
}

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RIS Citation

TY  - JOUR
ID  - ga02400q
AU  - Gamache, R. R.
AU  - Vispoel, B.
AU  - Boulet, C.
AU  - Ma, Q.
PY  - 2026
TI  - Modified and refined Robert-Bonamy calculations of half-widths of OCS in collision with N2, O2 and OCS
JA  - J. Quant. Spectrosc. Radiat. Transfer
JO  - Journal of Quantitative Spectroscopy and Radiative Transfer
VL  - 359
SP  - 109943
DO  - 10.1016/j.jqsrt.2026.109943
ER  -

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