Note: unless otherwise stated, the broadening coefficients for the principal (most abundant) isotopologue can be used for other isotopologues of the same molecule.

• fit-co.tab [1.5 KB]
  Theoretical H2-induced pressure broadening coefficients for 30 CO transitions in the range 115–3500 GHz
• 12C-16O__Faure.readme [795 bytes]
  Documentation for the theoretical H2-induced broadening coefficients for CO from the Faure et al. data set.
• 12C-16O__H2.broad [1.9 KB]
  a0-broadening parameters produced by averaging values from paper "H2, He, and CO2 line-broadening coefficients, pressure shifts and temperature-dependence exponents for the HITRAN database. Part 1: SO2, NH3, HF, HCl, OCS and C2H2." Compiled by Yixin Wang.
• 12C-16O__He.broad [1.6 KB]
  a0-broadening parameters produced by averaging values from paper "H2, He, and CO2 line-broadening coefficients, pressure shifts and temperature-dependence exponents for the HITRAN database. Part 1: SO2, NH3, HF, HCl, OCS and C2H2." Compiled by Yixin Wang.
• 12C-16O__air.broad
  CO - air pressure broadening parameters (main isotopologue).

References

1. Faure, A., Weisenfeld, L., Drouin, B. J., Tennyson, J., "Pressure broadening of water and carbon monoxide transitions by molecular hydrogen at high temperatures", Journal of Quantitative Spectroscopy and Radiative Transfer 116, 79-86 (2013). [link to article][13FaWeDr.H2O]
2. Gordon, I. E., Rothman, L. S., Hill, C., Kochanov, R. V., Tan, Y., Bernath, P. F., Birk, M., Boudon, V., Campargue, A., Chance, K. V., Drouin, B. J., Flaud, J.-M., Gamache, R. R., Hodges, J. T., Jacquemart, D., Perevalov, V. I., Perrin, A., Shine, K. P., Smith, M. A. H., Tennyson, J., Toon, G. C., Tran, H., Tyuterev, V. G., Barbe, A., Csaszar, A. G., Devi, V. M., Furtenbacher, T., Harrison, J.-J., Hartmann, J.-M., Jolly, A., Johnson, T.-J., Karman, T., Kleiner, I., Kyuberis, A. A., Loos, J., Lyulin, O. M., Massie, S T., Mikhailenko, S. N., Moazzen-Ahmadi, N., Muller, H. S. P., Naumenko, O. V., Nikitin, A. V., Polyansky, O. L., Rey, M., Rotger, M., Sharpe, S. W., Sung, K., Starikova, E., Tashkun, S. A., Vander Auwera, J., Wagner, G., Wilzewski, J., Wcislo, P., Yu, S., Zak, E. J., "The HITRAN2016 molecular spectroscopic database", Journal of Quantitative Spectroscopy and Radiative Transfer 203, 3-69 (2017). [link to article][17GoRoHi.CO2]
3. Guest, E.R., Tennyson, J., Yurchenko, S.N., "Modelling the Rotational Dependence of Line Broadening using Machine Learning", Journal of Molecular Spectroscopy 401, 111901 (2024). [link to article]