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

ABULIMITI Bumaliya, 1 哈尔滨工业大学深圳研究生院, 环境科学与工程研究中心, 广东深圳 518055;,1 Environmental Science and Engineering Research Center, Harbin Institute of Technology Shenzhen Graduate School, Shenzhen 518055, Guangdong Province, P. R. China;, ZHU Rong-Shu, QIU Xue-Jun, QIN Chen, ZHANG Bing, 2 中国科学院武汉物理与数学研究所, 波谱与原子分子物理国家重点实验室, 武汉 430071;,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 中国科学院大学, 北京 100049,3 University of Chinese Academy of Sciences, Beijing 100049, P. R. China
2014 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 photon
more » ... s to the 3s Rydberg state suggest that this state probably decays to the ground state in 62 fs.
doi:10.3866/pku.whxb201311122 fatcat:2yzjesvkx5dwbf3hxv7j5vdnmm