| Autor: |
Spesyvtsev, R., Horio, T., Suzuki, Y.-I., Suzuki, T. |
| Předmět: |
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| Zdroj: |
Journal of Chemical Physics; 2015, Vol. 143 Issue 1, p1-6, 6p, 1 Diagram, 1 Chart, 7 Graphs |
| Abstrakt: |
The excited-state dynamics of furan were studied by time-resolved photoelectron imaging using a sub-20-fs deep UV (198 nm) and vacuum UV (159 nm) light source. The 198- and 159-nm pulses produce photoionization signals in both pump-probe and probe-pump pulse sequences. When the 198-nm pulse precedes the 159-nm pulse, it creates the ¹A2(3s) Rydberg and ¹B2(ππ*) valence states, and the former decays exponentially with a time constant of about 20 fs whereas the latter exhibits more complex wave-packet dynamics. When the 159-nm pulse precedes the 198-nm pulse, a wave packet is created on the ¹A1(ππ*) valence state, which rapidly disappears from the observation window owing to structural deformation. The 159-nm photoexcitation also creates the 3s and 3px,y Rydberg states non-adiabatically. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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