Multiple recollisions in nonsequential double ionization below the recollision-ionization threshold

doi:10.1088/1674-1056/ac2d1e

中国物理B ›› 2021, Vol. 30 ›› Issue (12): 123402-123402.doi: 10.1088/1674-1056/ac2d1e

Multiple recollisions in nonsequential double ionization below the recollision-ionization threshold

Xiao-Meng Ma(马晓萌)^1,2,†, Ai-Hong Tong(童爱红)^1,2, Zhuo Wang(王茁)^1,2, and Chun-Yang Zhai(翟春洋)³

1 Department of Physics and Mechanical & Electrical Engineering, Hubei University of Education, Wuhan 430205, China;
2 Institute of Optoelectronic Materials and Components, Hubei University of Education, Wuhan 430205, China;
3 College of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, China

收稿日期:2021-07-18 修回日期:2021-09-22 接受日期:2021-10-06 出版日期:2021-11-15 发布日期:2021-11-30
通讯作者: Xiao-Meng Ma E-mail:maxiaomenghue@126.com
基金资助:
Project supported by the Natural Science Foundation of Hubei Province, China (Grant No. 2020CFB362), Scientific Research Program of Hubei Provincial Department of Education, China (Grant No. B2020176), and the National Natural Science Foundation of China (Grant No. 12104389).

Multiple recollisions in nonsequential double ionization below the recollision-ionization threshold

Xiao-Meng Ma(马晓萌)^1,2,†, Ai-Hong Tong(童爱红)^1,2, Zhuo Wang(王茁)^1,2, and Chun-Yang Zhai(翟春洋)³

1 Department of Physics and Mechanical & Electrical Engineering, Hubei University of Education, Wuhan 430205, China;
2 Institute of Optoelectronic Materials and Components, Hubei University of Education, Wuhan 430205, China;
3 College of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, China

Received:2021-07-18 Revised:2021-09-22 Accepted:2021-10-06 Online:2021-11-15 Published:2021-11-30
Contact: Xiao-Meng Ma E-mail:maxiaomenghue@126.com
Supported by:
Project supported by the Natural Science Foundation of Hubei Province, China (Grant No. 2020CFB362), Scientific Research Program of Hubei Provincial Department of Education, China (Grant No. B2020176), and the National Natural Science Foundation of China (Grant No. 12104389).

摘要/Abstract

摘要： By using the three-dimensional classical ensemble model, the recollision dynamics in nonsequential double ionization (NSDI) of Ar by 780-nm laser pulses at (6-1.2)×10¹⁴ W/cm² was extensively studied. We revealed the picture of multiple-recollision in the double ionization events at the laser intensity region below the recollision-ionization threshold. Via tracing the NSDI trajectories, it was found that the contribution of these multiple-recollision events increases as the laser intensity decreases. In this low intensity region, many multiple-recollision induced NSDI trajectories occur through the doubly excited states. The decay speed of the doubly excited state decreases with the decreasing laser intensity.

关键词: nonsequential double ionization, multiple recollision

Abstract: By using the three-dimensional classical ensemble model, the recollision dynamics in nonsequential double ionization (NSDI) of Ar by 780-nm laser pulses at (6-1.2)×10¹⁴ W/cm² was extensively studied. We revealed the picture of multiple-recollision in the double ionization events at the laser intensity region below the recollision-ionization threshold. Via tracing the NSDI trajectories, it was found that the contribution of these multiple-recollision events increases as the laser intensity decreases. In this low intensity region, many multiple-recollision induced NSDI trajectories occur through the doubly excited states. The decay speed of the doubly excited state decreases with the decreasing laser intensity.

Key words: nonsequential double ionization, multiple recollision

中图分类号: (Electron and positron scattering)

34.80.-i

79.70.+q (Field emission, ionization, evaporation, and desorption) 45.50.Tn (Collisions)

Xiao-Meng Ma(马晓萌), Ai-Hong Tong(童爱红), Zhuo Wang(王茁), and Chun-Yang Zhai(翟春洋). Multiple recollisions in nonsequential double ionization below the recollision-ionization threshold[J]. 中国物理B, 2021, 30(12): 123402-123402.

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Multiple recollisions in nonsequential double ionization below the recollision-ionization threshold

Multiple recollisions in nonsequential double ionization below the recollision-ionization threshold

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