Study of the vibrational level dependent quenching of CO(v =1--16) by CO2
Creators
- 1. Physical Sciences Inc., Woburn, Massachusetts 01801
Description
The technique of time resolved Fourier spectroscopy has been used to determine rate constants for the processes CO(v)+CO2→CO(v-1)+CO2, where the vibrationally excited CO is created through electron irradiation of Ar/CO2 mixtures. The CO production mechanism, predominantly dissociative recombination of CO2+, is found to produce CO excited to as much as v=19. The CO(v) deactivation rate constants are deduced from examination of the time histories of the vibrational population distribution. From a Stern--Volmer analysis, the residual quenching not due to CO2 is attributed entirely to CO(v=0) relaxation of CO(v) and radiative decay. Experimentally determined upper bounds for the CO(Δv=1) transition probabilities for spontaneous emission have been obtained for levels 7--12
Additional details
Publishing Information
- Journal Title
- J. Chem. Phys.
- Journal Volume
- 71
- Journal Issue
- 11
- Series
- J. Chem. Phys.
- Journal Page Range
- 4369-4379
- ISSN
- 0021-9606
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 11515001
- Subject category
- S74: ATOMIC AND MOLECULAR PHYSICS;
- Descriptors DEI
- CARBON DIOXIDE; CARBON MONOXIDE; DE-EXCITATION; KINETICS; MOLECULE-MOLECULE COLLISIONS; RELAXATION; VIBRATIONAL STATES
- Descriptors DEC
- CARBON COMPOUNDS; CARBON OXIDES; CHALCOGENIDES; COLLISIONS; ENERGY LEVELS; ENERGY-LEVEL TRANSITIONS; EXCITED STATES; MOLECULE COLLISIONS; OXIDES; OXYGEN COMPOUNDS