Vibrational radiative lifetimes in H2Se and HCS−

✍ Scribed by J. Senekowitsch; S. Carter; H.-J. Werner; P. Rosmus

• Publisher: Elsevier Science
• Year: 1987
• Tongue: English
• Weight: 467 KB
• Volume: 140
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(87)80750-9

✦ Synopsis

Vibrational dipole matrix elements and radiative transition probabilities for H,Se and HCS-have been evaluated from theoretical three-dimensional electric dipole moment and potential energy functions. The radiative lifetimes of the (u= 1, J=O) levels of HCS-have been calculated to be 3.5 ms (CH stretch), 172 ms (HCS bend) and 785 ms (CS stretch), and in H$e to be 122 ms (symmetric stretch), 1045 ms (bend) and 101 ms (asymmetric stretch). The lifetimes of higher vibrational states with no extensive mode-mixing decrease with increasing vibrational quantum number and vary in a mode-specific way.