Quantum state-resolved study of the rovibrational excitation of OCS by hot hydrogen atoms
Creators
- 1. Department of Chemistry and Columbia Radiation Laboratory, Columbia University, New York, New York 10027 (USA)
Description
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
Additional details
Publishing Information
- Journal Title
- Journal of Chemical Physics
- Journal Volume
- 92
- Journal Issue
- 3
- Series
- J. Chem. Phys.
- Journal Page Range
- 1687-1695
- ISSN
- 0021-9606
- CODEN
- JCPSA
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 21055005
- Subject category
- S74: ATOMIC AND MOLECULAR PHYSICS;
- Descriptors DEI
- ATOM-MOLECULE COLLISIONS; CARBON COMPOUNDS; ENERGY-LEVEL TRANSITIONS; EXCITATION; HYDROGEN; OXYSULFIDES; ROTATIONAL STATES; VIBRATIONAL STATES
- Descriptors DEC
- ATOM COLLISIONS; COLLISIONS; ELEMENTS; ENERGY LEVELS; EXCITED STATES; MOLECULE COLLISIONS; NONMETALS; OXYGEN COMPOUNDS; SULFUR COMPOUNDS