Dependence of the probability of VT-VV coupled transitions on vibrational quantum numbers

✍ Scribed by H.K. Shin

• Publisher: Elsevier Science
• Year: 1985
• Tongue: English
• Weight: 381 KB
• Volume: 116
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(85)85201-5

✦ Synopsis

The dependence of the probability of v -1 --, v vibrational excitations in molecule-molecule collisions on the vibrational quantum number v has been studied for v up to 7. This nominally VT energy transfer process can be strongly affected by the participation of VV mode particularly among high-lying states. The dependences of the probabilities on v among such states are shown to be non-linear largely due to the VT-VV intermode coupling. A sample calculation of the dependence in iodine molecules shows that the coupling is very strong when the temperature is high and that the probabilities seriously deviate from the linear relation Pv-1.0 ~ v,0 : vPo,o ~ 1,o, where molecule 1 undergoes transition from v -1 to v, while molecule 2 remains in the ground state.