Channel-Resolved Ultrafast Dissociation Dynamics of NO2 Molecules Studied via Femtosecond Time-Resolved Ion Imaging

作     者：Qin-xin Wang Dan-dan Shi Jun-feng Zhang Xue Wang Yu Si Chun-bin Gao Jian Fang Si-zuo Luo 王钦鑫;史丹丹;张军峰;王雪;司宇;高纯斌;方健;罗嗣佐

作者机构：College of Electrical EngineeringJilin Engineering Normal UniversityChangchun 130012China Institute of Atomic and Molecular Physics and Jilin Provincial Key Laboratory of Applied Atomic and Molecular SpectroscopyJilin UniversityChangchun 130012China 

出 版 物：《Chinese Journal of Chemical Physics》 (化学物理学报（英文）)

年 卷 期：2019年第32卷第3期

页      面：292-298,I0001页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：supported by the National Natural Science Foundation of China(No.11704148 No.11847039 No.11534004) 

主　　题：Ultrafast dynamics Strong field ionization Photodissociation dynamic Velocity map imaging 

摘      要：The ultrafast dissociation dynamics of NO2 molecules was investigated by femtosecond laser pump-probe mass spectra and ion *** results show that the kinetic energy release of NO+ions has two components,0.05 eV and 0.25 eV,and the possible dissociation channels have been *** channel resolved transient measurement of NO^+provides a method to disentangle the contribution of ultrafast dissociation pathways,and the transient curves of NO^+ions at different kinetic energy release are fitted by a biexponential *** fast component with a decay time of 0.25 ps is generated from the evolution of Rydberg *** slow component is generated from two competitive channels,one of the channel is absorbing one 400nm photon to the excited state A^2B2,which has a decay time of 30.0ps,and the other slow channel is absorbing three 400nm photons to valence type Rydberg states which have a decay time less than *** channel and time resolved experiment present the potential of sorting out the complex ultrafast dissociation dynamics of molecules.