A Reinvestigation of the B3Σ−−X3Σ− Transition of the SO Radical

✍ Scribed by C. Clerbaux; R. Colin

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 607 KB
• Volume: 165
• Category: Article
• ISSN: 0022-2852
• DOI: 10.1006/jmsp.1994.1137

✦ Synopsis

The (B^{3} \Sigma^{-}-X^{3} \Sigma^{-})transition of the SO radical has been reinvestigated at high resolution for two isotopomers ( ({ }^{32} \mathrm{~S}{ }^{16} \mathrm{O}) and ({ }^{32} \mathrm{~S}{ }^{18} \mathrm{O}) ). The rotational analysis of several bands has led to a reassignment of the branches and to a new set of molecular constants for the (v^{\prime}=0) and (v^{\prime}=1) levels of the (B) state. A limiting curve of predissociation of the (B^{3} \Sigma^{-})state by a shallow (C^{3}) II state has been obtained, which yields a precise value of the dissociation energy of the (X^{3} \Sigma^{-})state: (D_{e}^{\prime \prime}=) (43680 \pm 5 \mathrm{~cm}^{-1}). Many new rotational perturbations were observed in the (B^{3} \Sigma^{-})state, but a complete understanding of these was not possible. (ai 1994 Academic Press. Inc.