Ultrafast Photodissociation Dynamics of the F State of Sulfur Dioxide by Femtosecond Time-Resolved Pump-Probe Method

作     者：ZHANG Dong-Doug NI Qiang LUO Si-Zuo ZHANG Jing LIU Hang XU Hai-Feng JIN Ming-Xing DING Da-Jun 张栋栋;倪强;罗嗣佐;张晶;刘航;徐海峰;金明星;丁大军

作者机构：Institute of Atomic and Molecular PhysicsJilin UniversityChangchun 130012 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2011年第28卷第3期

页      面：58-61页

核心收录：

学科分类：080901[工学-物理电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 0803[工学-光学工程] 

基　　金：Supported by the National Natural Science Foundation of China under Grant No 10874056 and 11074095 

主　　题：Femto pump dissociation 

摘      要：A femtosecond pump-probe method is employed to study the dissociation dynamics of sulfur ***_(2)molecules are excited to the F state by absorbing two photons of 267nm femtosecond laser pulses,and ionized by 400nm laser pulses at different delay times between the two *** of both parent ions(SO_(2)^(+))and the fragment ions(SO^(+),S^(+)and O^(+)are *** S0_(2)^(+)transient can be well fitted to a biexponential decay comprising a fast and a slow component of 280fs and 2.97ps lifetimes,*** SO^(+)transient consists of two growth components of 270 fs and 2.50 *** results clearly show that the F state of S0_(2)dissociates along an S-0 *** transients of S^(+)and O^(+),however,have different behavior,which consist of a fast growth and a long decay component.A possible mechanism of the fragment formation is discussed to understand the dissociation dynamics of the F state of SO_(2).