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Wuli huaxue xuebao
The ultrafast dynamics of excited states in 3-picoline was studied using femtosecond timeresolved photoelectron imaging, coupled with time-resolved mass spectroscopy. An ultrafast internal conversion from the S2 state to the vibrationally excited S1 state in about 910 fs was observed. This secondary-populated S1 state further deactivates to the S0 state in 2.77 ps. The photoelectron energy and angular distributions show ionizations from the singlet 3p Rydberg states. Two 400 nm photondoi:10.3866/pku.whxb201311122 fatcat:2yzjesvkx5dwbf3hxv7j5vdnmm