Vibrational relaxation of HF(υ = 3,4)

Abstract

The vibrational relaxation of pure HF(υ = 3 and υ = 4) has been studied by pumping HF directly from υ = 0 to υ = 4. The relaxation rates of υ = 3 and υ = 4 were determined to be k 3 T = (2.8 ± 0.4) × 10 −11 cm 3 molecule −1 s −1 and k 4 T = (7.2. ± 0.5) × 10 −11 cm 3 molecule −1 s −1 at 293 K. It is shown that sigle quantum energy transfer can account for all the vibrational relaxation.