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ISSN 1000-6818CN 11-1892/O6CODEN WHXUEU
Acta Phys Chim Sin >> 2017,Vol.33>> Issue(3)>> 506-512     doi: 10.3866/PKU.WHXB201612061         中文摘要
Ultrafast Nonadiabatic Dynamics of Electronically Excited 2-Methyl Furan
LONG Jin-You1, LIU Zhi-Ming1, QIU Xue-Jun1,2, ZHANG Bing1
1 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;
2 College of Electronics and Information, South-Central University for Nationalities, Wuhan 430074, P. R. China
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Excited-state dynamics of 2-methyl furan has been studied by femtosecond time-resolved photoelectron imaging. The molecule 2-methyl furan was simultaneously excited to the n=3 Rydberg series of S1[1A"(π3s)], 1A'(π3px), 1A"(π3py) and 1A"(π3pz) and the valence state of 1A'(ππ*) by two 400 nm photons and subsequently probed by two 800 nm photons. The average lifetime of the Rydberg series and the valence state was measured to be on the time scale of 50 fs by the time-dependent ion yield of the parent ion. Ultrafast internal conversions among these excited states were observed and extracted from the time-dependences of the photoelectron kinetic energy components of these excited states in the photoelectron kinetic energy spectra. Furthermore, it is identified that the 1A'(ππ*) state might play an important role in internal conversions among these excited states. The Rydberg-valence mixings, which result in numerous conical intersections, act as the driving force to accomplish such ultrafast internal conversions.



Keywords: Ultrafast   Photoelectron imaging   Nonadiabatic dynamics   2-Methyl furan  
Received: 2016-09-14 Accepted: 2016-12-06 Publication Date (Web): 2016-12-06
Corresponding Authors: ZHANG Bing Email: bzhang@wipm.ac.cn

Fund: The project was supported by the National Natural Science Foundation of China (21273274,21303255,11404411)

Cite this article: LONG Jin-You, LIU Zhi-Ming, QIU Xue-Jun, ZHANG Bing. Ultrafast Nonadiabatic Dynamics of Electronically Excited 2-Methyl Furan[J]. Acta Phys. -Chim. Sin., 2017,33 (3): 506-512.    doi: 10.3866/PKU.WHXB201612061

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