Magnetic field effects on the single-rovibronic-level fluorescence of {ital S}{sub 1}({sup 1}{ital B}{sub 1}) pyrimidine: Study of the singlet{endash}triplet coupling by level anticrossings and quantum beats
Journal Article
·
· Journal of Chemical Physics
- Department of Chemistry, The University of Akron, Akron, Ohio 44325-3601 (United States)
Level anticrossings and quantum beats have been observed for the fluorescence from single rotational levels of the vibrationless {ital S}{sub 1} pyrimidine in a supersonic free jet. The density of triplet levels ({rho}) and the coupling matrix elements ({ital v}) deduced from the data obtained for {ital R}(0) transition confirm that the singlet{endash}triplet coupling belongs to the weak coupling limit ({ital v}{rho}{lt}1) of interstate interaction, in which electronic relaxation from the prepared singlet state to the triplet manifold does not occur in the absence of collisions. {copyright} {ital 1996 American Institute of Physics.}
- OSTI ID:
- 383749
- Journal Information:
- Journal of Chemical Physics, Journal Name: Journal of Chemical Physics Journal Issue: 14 Vol. 105; ISSN JCPSA6; ISSN 0021-9606
- Country of Publication:
- United States
- Language:
- English
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