AI Article Synopsis
- The study examined the ultrafast dynamics of CS2 in an excited state using photoelectron imaging with a 22 fs time resolution.
- The observed photoelectron signal showed vibrational quantum beats and decayed over approximately 400 fs, with a 30 fs lag indicating the time taken for vibrational wave packet propagation.
- The photoelectron angular distribution did not change with varying delay times, meaning no noticeable changes in electronic character due to vibrational motion were detected within measurement accuracy.
Article Abstract
The ultrafast dynamics of CS(2) in the (1)B(2)((1)Σ(u)(+)) state was studied by photoelectron imaging with a time resolution of 22 fs. The photoelectron signal intensity exhibited clear vibrational quantum beats due to wave packet motion. The signal intensity decayed with a lifetime of about 400 fs. This decay was preceded by a lag of around 30 fs, which was considered to correspond to the time for a vibrational wave packet to propagate from the Franck-Condon region to the region where predissociation occurred. The photoelectron angular distribution remained constant when the pump-probe delay time was varied. Consequently, variation of the electronic character caused by the vibrational wave packet motion was not identified within the accuracy of our measurements.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3263315 | PMC |
| http://dx.doi.org/10.1002/asia.201100458 | DOI Listing |
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