Rapid vibrational and rotational energy-transfer rates in heated carbon dioxide collisions by double-resonance laser spectroscopy
Rates for resonant vibrational and rotational energy transfer from the 001 state by CO/sub 2/ + CO/sub 2/ collisions have been measured. All data were obtained by double resonance spectroscopy with CO/sub 2/ lasers in a 2.5 meter absorption cell at 700/sup 0/K. Results for rotation transfer include pumped-level relaxation and the response of other 001 levels with ..delta..J up to 18. These data are compared to four relevant collision models via a 35-level rate equation analysis. Sequence-band (002 ..-->.. 101) and hot-band (011 ..-->.. 110) lasting have been used to observe resonant nu/sub 3/-transfer relaxation involving 001 + 001 reversible 002 + 000, 001 + 100 reversible 101 + 000, and 001 + 010 reversible 011 + 000. A multilevel rate analysis has been utilized to determine the rate coefficients for 001 going to the 002, the 101, and the 011 levels. Part of the hot-band data has been interpreted as due to 110 + 000 reversible 100 + 010, and the associated rate constant has been estimated. The results of the study are compared to the theory and to other experiments.
- Research Organization:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 5016856
- Report Number(s):
- LA-9420-T; ON: DE82021844
- Resource Relation:
- Other Information: Theses. Submitted to Univ. of Virginia, Charlottesville
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CARBON DIOXIDE
MOLECULE-MOLECULE COLLISIONS
DE-EXCITATION
ENERGY TRANSFER
EXPERIMENTAL DATA
LASER SPECTROSCOPY
RELAXATION
ROTATIONAL STATES
VIBRATIONAL STATES
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
COLLISIONS
DATA
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITED STATES
INFORMATION
MOLECULE COLLISIONS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
SPECTROSCOPY
640304* - Atomic
Molecular & Chemical Physics- Collision Phenomena