ISSN:
1089-7690
Source:
AIP Digital Archive
Topics:
Physics
,
Chemistry and Pharmacology
Notes:
The vibrationally inelastic scattering of OCS by hot hydrogen atoms was studied using an excimer laser photolysis/diode laser probe technique. Nascent rotational distributions for the 1000 (2062 cm−1) and 0001 (859 cm−1) stretching vibrations are well fit to Boltzmann temperatures of 840±50 and 545±60 K, respectively. The total vibrational excitation probability of the 0001 state was about 2.3±0.3 times that of the 1000 state. Measurement of OCS linewidths immediately after hot atom collisions indicate translational recoil temperatures that vary from 360 to 730 K, with a positive dependence on rotational state. The results are interpreted in terms of repulsive, hard shell collisions with the different stretching vibrations arising from trajectories approaching different ends of the OCS molecule.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.458050
