首页|Internal collision double ionization of molecules driven by co-rotating two-color circularly polarized laser pulses

Internal collision double ionization of molecules driven by co-rotating two-color circularly polarized laser pulses

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The double ionization process of molecules driven by co-rotating two-color circularly polarized fields is investigated with a three-dimensional classical ensemble model.Numerical results indicate that a considerable part of the sequential double ionization(DI)events of molecules occur through internal collision double ionization(ICD),and the ICD recollision mechanism is significantly different from that in non-sequential double ionization(NSDI).By analyzing the results of internuclear distances R=5 a.u.and 2 a.u.,these two recollision mechanisms are studied in depth.It is found that the dynamic behaviors of the recollision mechanisms of NSDI and ICD are similar.For NSDI,the motion range of electrons after the ionization is relatively large,and the electrons will return to the core after a period of time.In the ICD process,electrons will rotate around the parent ion before ionization,and the distance of the electron motion is relatively small.After a period of time,the electrons will come back to the core and collide with another electron.Furthermore,the molecular internuclear distance has a significant effect on the electron dynamic behavior of the two ionization mechanisms.This study will help to understand the multi-electron ionization process of complex systems.

non-sequential double ionizationinternuclear distanceinternal-collisioncircularly polarized laser field

李雪峰、乔月、吴丹、蔚瑞贤、陈基根、王俊、郭福明、杨玉军

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Institute of Atomic and Molecular Physics,Jilin University,Changchun 130012,China

Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy(Jilin University),Changchun 130012,China

School of Science,Jilin Institute of Chemical Technology,Jilin 132022,China

Zhejiang Provincial Key Laboratory for Cutting Tools,Taizhou University,Jiaojiang 318000,China

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National Key Research and Development Program of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaJilin Provincial Research Foundation for Basic Research,ChinaJilin Provincial Education Department

2019YFA0307700120741451197501220220101003JCJJKH20230284KJ

2024

10.1088/1674-1056/acf5d8

中国物理B(英文版)
中国物理学会和中国科学院物理研究所

中国物理B(英文版)

CSTPCDEI
影响因子：0.995
ISSN：1674-1056
年,卷(期)：2024.33(1)
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