Acta Phys. -Chim. Sin. ›› 2014, Vol. 30 ›› Issue (1): 22-27.doi: 10.3866/PKU.WHXB201311122


Studies of Ultrafast Dynamics of 3-Picoline with Femtosecond Time-Resolved Photoelectron Imaging

ABULIMITI Bumaliya1,2,3, ZHU Rong-Shu1, QIU Xue-Jun2,3, QIN Chen2,3, ZHANG Bing2,3   

  1. 1 Environmental Science and Engineering Research Center, Harbin Institute of Technology Shenzhen Graduate School, Shenzhen 518055, Guangdong Province, P. R. China;
    2 State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, P. R. China;
    3 University of Chinese Academy of Sciences, Beijing 100049, P. R. China
  • Received:2013-08-29 Revised:2013-11-12 Published:2014-01-01
  • Contact: ZHU Rong-Shu, ZHANG Bing;
  • Supported by:

    The project was supported by the National Natural Science Foundation of China (91121006, 21273274).


The ultrafast dynamics of excited states in 3-picoline were 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 photon excitations to the 3s Rydberg state suggest that this state probably decays to the ground state in 62 fs.

Key words: Picoline, Photoelectron imaging, Internal conversion, Pump-probe, Time-resolved spectroscopy


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