Energy transfer from highly vibrationally excited azulene and azulene-d/sub 8/ to carbon dioxide
Time-resolved diode laser absorption spectroscopy has been used to study vibrational-to-vibrational energy transfer from highly excited azulene and azulene-d/sub 8/ to carbon dioxide. The energetic azulene molecules were prepared by internal conversion (S/sub 2/..-->..S/sub 0/) after excitation into the S/sub 2/ state by a pulsed laser source of 337 nm photons. Relative populations of CO/sub 2/ vibrational modes were determined and compared with predictions of a statistical model. The total vibrational energy transferred to CO/sub 2/ was determined to be about 25% of the initial azulene energy. Similar experiments were carried out using 248 nm photons to excite azulene in the region of the S/sub 4/ state.
- Research Organization:
- Department of Chemistry, Brookhaven National Laboratory, Upton, New York 11973
- OSTI ID:
- 6989775
- Journal Information:
- J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 89:4; ISSN JCPSA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400201 -- Chemical & Physicochemical Properties
640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
AZULENE
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
COLLISIONS
DEUTERIUM COMPOUNDS
ENERGY LEVELS
ENERGY TRANSFER
ENERGY-LEVEL TRANSITIONS
EXCITED STATES
HYDROCARBONS
HYDROGEN COMPOUNDS
LASER SPECTROSCOPY
MOLECULE COLLISIONS
MOLECULE-MOLECULE COLLISIONS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
SPECTROSCOPY
VIBRATIONAL STATES