Collisional excitation of CO/sub 2/ by N/sub 2/, O/sub 2/, and Ar
We have measured cross sections for the T-V excitation of the asymmetric mode of ground state CO/sub 2/ molecules in collision with N/sub 2/, O/sub 2/, and Ar molecules at relative velocities in the range from 2 to 5 km/s. Excitation was brought about by interacting two slightly collimated molecular beams in the field of view of an InSb photovoltaic detector which monitored resulting radiation in the 4.3 ..mu..m band. The excitation cross sections for all three combinations of partners were of similar magnitude and had a strong dependence upon collision velocity. In the case of N/sub 2/--CO/sub 2/, for which we have the most data, the measured cross sections range from about 4 x 10/sup -19/ cm/sup 2/ at 2 km/s to about 1 x 10/sup -17/ cm/sup 2/ at 5 km/s.
- Research Organization:
- Yale University, New Haven, Connecticut 06520
- OSTI ID:
- 5287421
- Journal Information:
- J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 76:12; ISSN JCPSA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ARGON
ATOM COLLISIONS
ATOM-MOLECULE COLLISIONS
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
COLLISIONS
CROSS SECTIONS
ELEMENTS
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITATION
EXCITED STATES
FLUIDS
GASES
MOLECULE COLLISIONS
MOLECULE-MOLECULE COLLISIONS
NITROGEN
NONMETALS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
RARE GASES
VIBRATIONAL STATES