Coulomb exploded directional double ionization of N2O molecules in multicycle femtosecond laser pulses

doi:10.1088/1674-1056/ab38aa

中国物理B ›› 2019, Vol. 28 ›› Issue (9): 93301-093301.doi: 10.1088/1674-1056/ab38aa

所属专题： SPECIAL TOPIC — Strong-field atomic and molecular physics

• SPECIAL TOPIC-Strong-field atomic and molecular physics • 上一篇下一篇

Coulomb exploded directional double ionization of N₂O molecules in multicycle femtosecond laser pulses

1 State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China;
2 Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China

收稿日期:2019-05-27 修回日期:2019-06-24 出版日期:2019-09-05 发布日期:2019-09-05
通讯作者: Jian Wu E-mail:jwu@phy.ecnu.edu.cn
基金资助:
Project supported by the National Key R&D Program of China (Grant No. 2018YFA0306303), the National Natural Science Fundation of China (Grant Nos. 11425416, 11834004, and 11761141004), and the 111 Project of China (Grant No. B12024).

Coulomb exploded directional double ionization of N₂O molecules in multicycle femtosecond laser pulses

Junyang Ma(马俊杨)¹, Kang Lin(林康)¹, Qinying Ji(季琴颖)¹, Wenbin Zhang(张文斌)¹, Hanxiao Li(李韩笑)¹, Fenghao Sun(孙烽豪)¹, Junjie Qiang(强俊杰)¹, Peifen Lu(陆培芬)¹, Hui Li(李辉)¹, Xiaochun Gong(宫晓春)¹, Jian Wu(吴健)^1,2

1 State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China;
2 Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China

Received:2019-05-27 Revised:2019-06-24 Online:2019-09-05 Published:2019-09-05
Contact: Jian Wu E-mail:jwu@phy.ecnu.edu.cn
Supported by:
Project supported by the National Key R&D Program of China (Grant No. 2018YFA0306303), the National Natural Science Fundation of China (Grant Nos. 11425416, 11834004, and 11761141004), and the 111 Project of China (Grant No. B12024).

摘要/Abstract

摘要：

We experimentally investigate Coulomb exploded directional double ionization of N₂O molecules in elliptically polarized femtosecond laser pulses. The denitrogenation and deoxygenation channels are accessed via various pathways. It leads to distinct asymmetries in directional breaking of the doubly ionized N₂O molecules versus the instantaneous laser field vector, which is revealed by tracing the sum-momentum spectra of the ionic fragments as a recoil of the ejected electrons. Our results demonstrate that the accessibility of the Coulomb exploded double ionization channels of N₂O molecules are ruled by the detailed potential energy curves, and the directional emission of the fragments are governed by the joint effects of the electron localization-assisted enhanced ionization of the stretched molecules and the profiles of the molecular orbitals.

关键词: strong-field ionization, directional molecular bond breaking, ultrafast dynamics of molecules

Abstract:

Key words: strong-field ionization, directional molecular bond breaking, ultrafast dynamics of molecules

中图分类号: (Multiphoton ionization and excitation to highly excited states (e.g., Rydberg states))

33.80.Rv

马俊杨, 林康, 季琴颖, 张文斌, 李韩笑, 孙烽豪, 强俊杰, 陆培芬, 李辉, 宫晓春, 吴健. Coulomb exploded directional double ionization of N₂O molecules in multicycle femtosecond laser pulses[J]. 中国物理B, 2019, 28(9): 93301-093301.

Junyang Ma(马俊杨), Kang Lin(林康), Qinying Ji(季琴颖), Wenbin Zhang(张文斌), Hanxiao Li(李韩笑), Fenghao Sun(孙烽豪), Junjie Qiang(强俊杰), Peifen Lu(陆培芬), Hui Li(李辉), Xiaochun Gong(宫晓春), Jian Wu(吴健). Coulomb exploded directional double ionization of N₂O molecules in multicycle femtosecond laser pulses[J]. Chin. Phys. B, 2019, 28(9): 93301-093301.

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Coulomb exploded directional double ionization of N₂O molecules in multicycle femtosecond laser pulses

Coulomb exploded directional double ionization of N₂O molecules in multicycle femtosecond laser pulses

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