Nuclear dissociation after the O 1s→(^(4)Σ_(u)^(-))3sσexcitation in O_(2)molecules  

作　　者：Bocheng Ding Ruichang Wu Yunfei Feng Xiaojing Liu 丁伯承;吴睿昌;封云飞;刘小井(School Physical Science and Technology,ShanghaiTech University,Shanghai 201210,China;Center for Transformative Science,ShanghaiTech University,Shanghai 201210,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]School Physical Science and Technology,ShanghaiTech University,Shanghai 201210,China [2]Center for Transformative Science,ShanghaiTech University,Shanghai 201210,China [3]University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Chinese Physics B》2022年第8期372-375,共4页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant No.11574020);the Project of Thousand Youth Talents in China;the Starting Grant of ShanghaiTech University。

摘　　要：We investigate the dissociation dynamics of core-excited O_(2)molecules using a high-resolution energy-resolved electron-ion coincidence experimental setup.The excited cationic states with two valence holes and one Rydberg electron are created after spectator Auger decay induced by O 1s→(^(4)Σ_(u)^(-))3sσcore excitation in O_(2).From the energy correlation between the kinetic energy of the Auger electron and the ion kinetic energy release,we distinguish several dissociation channels.Rather complex dissociation channels of the spectator Auger final states are disclosed,which can be explained by the increased number of the crossing point due to the existence of Rydberg electron.The quantum system will evolve into different dissociation limits at each crossing point between the potential energy curves.

关 键 词：nuclear dissociation resonant excitation spectator Auger 

分 类 号：O571[理学—粒子物理与原子核物理]