Nuclear dissociation after the O 1s $\rightarrow (^4\Sigma_\text{u}^-)$3sσ excitation in O$_2$ molecules

doi:10.1088/1674-1056/ac560b

中国物理B ›› 2022, Vol. 31 ›› Issue (8): 83301-083301.doi: 10.1088/1674-1056/ac560b

Nuclear dissociation after the O 1s $\rightarrow (^4\Sigma_\text{u}^-)$3sσ excitation in O$_2$ molecules

Bocheng Ding(丁伯承)^1,2,3, Ruichang Wu(吴睿昌)^1,2, Yunfei Feng(封云飞)^1,2, and Xiaojing Liu(刘小井)^1,2,†

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

收稿日期:2021-12-26 修回日期:2022-02-14 接受日期:2022-02-17 出版日期:2022-07-18 发布日期:2022-07-18
通讯作者: Xiaojing Liu E-mail:liuxj@shanghaitech.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 11574020), the Project of Thousand Youth Talents in China, and the Starting Grant of ShanghaiTech University.

Nuclear dissociation after the O 1s $\rightarrow (^4\Sigma_\text{u}^-)$3sσ excitation in O$_2$ molecules

Bocheng Ding(丁伯承)^1,2,3, Ruichang Wu(吴睿昌)^1,2, Yunfei Feng(封云飞)^1,2, and Xiaojing Liu(刘小井)^1,2,†

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

Received:2021-12-26 Revised:2022-02-14 Accepted:2022-02-17 Online:2022-07-18 Published:2022-07-18
Contact: Xiaojing Liu E-mail:liuxj@shanghaitech.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 11574020), the Project of Thousand Youth Talents in China, and the Starting Grant of ShanghaiTech University.

摘要/Abstract

摘要： We investigate the dissociation dynamics of core-excited $\mathrm{O}_2$ 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 $\mathrm{O}$ 1s $\rightarrow (^4\Sigma_{\rm u}^-)3{\rm s}\sigma$ core excitation in $\mathrm{O}_2$. 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

Abstract: We investigate the dissociation dynamics of core-excited $\mathrm{O}_2$ 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 $\mathrm{O}$ 1s $\rightarrow (^4\Sigma_{\rm u}^-)3{\rm s}\sigma$ core excitation in $\mathrm{O}_2$. 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.

Key words: nuclear dissociation, resonant excitation, spectator Auger

中图分类号: (Diffuse spectra; predissociation, photodissociation)

33.80.Gj

31.70.Hq (Time-dependent phenomena: excitation and relaxation processes, and reaction rates) 32.80.Hd (Auger effect)

Bocheng Ding(丁伯承), Ruichang Wu(吴睿昌), Yunfei Feng(封云飞), and Xiaojing Liu(刘小井). Nuclear dissociation after the O 1s $\rightarrow (^4\Sigma_\text{u}^-)$3sσ excitation in O$_2$ molecules[J]. 中国物理B, 2022, 31(8): 83301-083301.

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Nuclear dissociation after the O 1s $\rightarrow (^4\Sigma_\text{u}^-)$3sσ excitation in O$_2$ molecules

Nuclear dissociation after the O 1s $\rightarrow (^4\Sigma_\text{u}^-)$3sσ excitation in O$_2$ molecules

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