ABSOLUTE INTENSITIES IN (OCS)-O-16-C-12-S-32 - THE 2500-3100-CM(-1) REGION

About 400 absolute intensities have been measured for six bands(5 Sigm a-Sigma and 1 Pi-Sigma bands) of (OCS)-O-16-C-12-S-32 in the region of the nu(1) + nu(3) band near 3.4 mu m. The majority of these bands exh ibit weak to very strong Herman-Wallis behavior as a result of various anharmonic and l-type resonances between the upper levels involved. T he individual line intensities were treated in two different ways. Fir st, they were fitted to usual effective formulae, leading to the band strengths and Herman-Wallis factors. Second, the line intensities in t he five Sigma-Sigma bands were fitted to a model taking explicitly int o account the various anharmonic and I-type resonances between the upp er levels. This treatment showed that these resonances quantitatively explain to a large extent the Herman-Wallis behavior observed. (C) 199 5 Academic Press, Inc.