Femtosecond time-resolved photoionization and photoelectron spectroscopy studies of ultrafast internal conversion in 1,3,5-hexatriene
Journal Article
·
· Journal of Chemical Physics
- Combustion Research Facility, Sandia National Laboratories, Livermore, California 94551 (United States)
Ultrafast photodynamics in a 1,3,5-hexatriene are studied using femtosecond time-resolved photoionization and photoelectron spectroscopy. The {ital trans} and {ital cis} isomers have distinctly different dynamics following excitation at the {ital S}{sub 2} origin near 250 nm. An intermediate, presumably the {ital S}{sub 1} state, is observed for both {ital trans} and {ital cis} isomers with lifetimes of 270 fs and 730 fs, respectively. Time-delayed photoelectron spectra of {ital cis}-hexatriene determine a 300 fs time scale for vibrational energy redistribution within the intermediate {ital S}{sub 1} state. {copyright} {ital 1996 American Institute of Physics.}
- OSTI ID:
- 253454
- Journal Information:
- Journal of Chemical Physics, Journal Name: Journal of Chemical Physics Journal Issue: 2 Vol. 104; ISSN JCPSA6; ISSN 0021-9606
- Country of Publication:
- United States
- Language:
- English
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