Radiative and nonradiative relaxation dynamics of sulfur dioxide excited in the 3000 to 3300-A region. Fluorescence emission spectra and lifetimes of single rotational levels
- Univ. of California, Irvine
Emission spectra from single rotational levels (SRL's) of SO/sub 2/ excited in the 3000-3400-A region have been recorded and are found to be in agreement with the earlier emission study of single vibronic levels (SVL's) by Shaw et al. The ratio of continuum to discrete emission is observed to increase with increasing excitation energy and pressure. Zero-pressure lifetimes of 41 SRL's in 7 different vibronic levels have been measured and show a systematic decrease with increasing excitation energy. These lifetimes variations and changes in the continuum vs. discrete emission have been interpreted in terms of a mixed vibronic state involving the zero-order /sup 1/A/sub 2/ state and /sup 1/B/sub 1/ state perturbed to varying degrees by the Renner-Teller interaction with the /sup 1/A/sub 1/ ground state. 8 figures, 7 tables.
- DOE Contract Number:
- AT03-76ER70217
- OSTI ID:
- 5580985
- Journal Information:
- J. Phys. Chem.; (United States), Vol. 87:20
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
74 ATOMIC AND MOLECULAR PHYSICS
SULFUR DIOXIDE
FLUORESCENCE
EMISSION SPECTROSCOPY
EXCITATION
EXPERIMENTAL DATA
LASER RADIATION
MEDIUM VACUUM
PHOTOIONIZATION
PRESSURE DEPENDENCE
ROTATIONAL STATES
STRUCTURAL CHEMICAL ANALYSIS
TIME DEPENDENCE
VIBRATIONAL STATES
CHALCOGENIDES
DATA
ELECTROMAGNETIC RADIATION
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITED STATES
INFORMATION
IONIZATION
LUMINESCENCE
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
RADIATIONS
SPECTROSCOPY
SULFUR COMPOUNDS
SULFUR OXIDES
400500* - Photochemistry
400201 - Chemical & Physicochemical Properties
640304 - Atomic
Molecular & Chemical Physics- Collision Phenomena