Absolute line intensities for carbonyl sulfide from 827 to 2939 cm −1

Abstract

Using a total of 18 unapodized high-resolution (MOPD=300 and 450 cm) Fourier transform absorption spectra of carbonyl sulfide ( P× ℓ=14.3–60,600 Pa×cm, T=296.0 K), we measured 1340 absolute line intensities in 8 bands ( ν 1 + ν 2 1 − ν 2 1 , 2 ν 2 0 , 2 ν 1 , ν 1 + 2 ν 2 0 , 4 ν 2 0 , ν 3 , ν 2 1 + ν 3 − ν 2 1 , ν 1 + ν 3 ) of the main isotopologue, located between 827 and 2939 cm −1. In addition, we measured 307 absolute line intensities in the ν 3 fundamental band of 16O 12C 34S and 16O 13C 32S, observed near 2061.45 and 2009.23 cm −1, respectively. The observed Herman–Wallis dependences are in most cases reproduced by the global model of OCS [E. Rbaihi, A. Belafhal, J. Vander Auwera, S. Naïm, and A. Fayt, J. Mol. Spectrosc., 191:32–44, 1998]. The pressure self-broadening parameter was also measured up to J=83.