Effect of sharp vacuum-plasma boundary on the electron injection and acceleration in a few-cycle laser driven wakefield

doi:10.1088/1674-1056/acdc0c

中国物理B ›› 2023, Vol. 32 ›› Issue (9): 95202-095202.doi: 10.1088/1674-1056/acdc0c

Effect of sharp vacuum-plasma boundary on the electron injection and acceleration in a few-cycle laser driven wakefield

Guo-Bo Zhang(张国博)^1,†, Song Liu(刘松)¹, De-Bin Zou(邹德滨)², Ye Cui(崔野)¹, Jian-Peng Liu(刘建鹏)¹, Xiao-Hu Yang(杨晓虎)^1,3,‡, Yan-Yun Ma(马燕云)^3,4, and Fu-Qiu Shao(邵福球)²

1 Department of Nuclear Science and Technology, National University of Defense Technology (NUDT), Changsha 410073, China;
2 Department of Physics, National University of Defense Technology, Changsha 410073, China;
3 Collaborative Innovation Center of IFSA (CICIFSA), Shanghai Jiao Tong University, Shanghai 200240, China;
4 College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, China

收稿日期:2023-05-24 修回日期:2023-06-01 接受日期:2023-06-07 发布日期:2023-09-01
通讯作者: Guo-Bo Zhang, Xiao-Hu Yang E-mail:zgb830@163.com;xiaohu.yang@aliyun.com
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 12005297, 12175309, 12175310, 11975308, and 12275356), the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. XDA25050200), the Research Project of NUDT (Grant No. ZK21-12), and the Key Laboratory Foundation of Laser Plasma of Ministry of Education. De-Bin Zou also acknowledges the financial support from the NUDT Young Innovator Awards (Grant No. 20190102) and Outstanding Young Talents.

Effect of sharp vacuum-plasma boundary on the electron injection and acceleration in a few-cycle laser driven wakefield

1 Department of Nuclear Science and Technology, National University of Defense Technology (NUDT), Changsha 410073, China;
2 Department of Physics, National University of Defense Technology, Changsha 410073, China;
3 Collaborative Innovation Center of IFSA (CICIFSA), Shanghai Jiao Tong University, Shanghai 200240, China;
4 College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, China

Received:2023-05-24 Revised:2023-06-01 Accepted:2023-06-07 Published:2023-09-01
Contact: Guo-Bo Zhang, Xiao-Hu Yang E-mail:zgb830@163.com;xiaohu.yang@aliyun.com
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 12005297, 12175309, 12175310, 11975308, and 12275356), the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. XDA25050200), the Research Project of NUDT (Grant No. ZK21-12), and the Key Laboratory Foundation of Laser Plasma of Ministry of Education. De-Bin Zou also acknowledges the financial support from the NUDT Young Innovator Awards (Grant No. 20190102) and Outstanding Young Talents.

摘要/Abstract

摘要： The electron injection and acceleration driven by a few-cycle laser with a sharp vacuum-plasma boundary have been investigated through three-dimensional (3D) particle-in-cell simulations. It is found that an isotropic boundary impact injection (BII) first occurs at the vacuum-plasma boundary, and then carrier-envelope-phase (CEP) shift causes the transverse oscillation of the plasma bubble, resulting in a periodic electron self-injection (SI) in the laser polarization direction. It shows that the electron charge of the BII only accounts for a small part of the total charge, and the CEP can effectively tune the quality of the injected electron beam. The dependences of laser intensity and electron density on the total charge and the ratio of BII charge to the total charge are studied. The results are beneficial to electron acceleration and its applications, such as betatron radiation source.

关键词: laser wakefield acceleration, few-cycle laser, sharp vacuum-plasma boundary

Abstract: The electron injection and acceleration driven by a few-cycle laser with a sharp vacuum-plasma boundary have been investigated through three-dimensional (3D) particle-in-cell simulations. It is found that an isotropic boundary impact injection (BII) first occurs at the vacuum-plasma boundary, and then carrier-envelope-phase (CEP) shift causes the transverse oscillation of the plasma bubble, resulting in a periodic electron self-injection (SI) in the laser polarization direction. It shows that the electron charge of the BII only accounts for a small part of the total charge, and the CEP can effectively tune the quality of the injected electron beam. The dependences of laser intensity and electron density on the total charge and the ratio of BII charge to the total charge are studied. The results are beneficial to electron acceleration and its applications, such as betatron radiation source.

Key words: laser wakefield acceleration, few-cycle laser, sharp vacuum-plasma boundary

中图分类号: (Laser-plasma acceleration of electrons and ions)

52.38.Kd

52.65.Rr (Particle-in-cell method) 52.35.Mw (Nonlinear phenomena: waves, wave propagation, and other interactions (including parametric effects, mode coupling, ponderomotive effects, etc.))

Guo-Bo Zhang(张国博), Song Liu(刘松), De-Bin Zou(邹德滨), Ye Cui(崔野), Jian-Peng Liu(刘建鹏), Xiao-Hu Yang(杨晓虎), Yan-Yun Ma(马燕云), and Fu-Qiu Shao(邵福球). Effect of sharp vacuum-plasma boundary on the electron injection and acceleration in a few-cycle laser driven wakefield[J]. 中国物理B, 2023, 32(9): 95202-095202.

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Effect of sharp vacuum-plasma boundary on the electron injection and acceleration in a few-cycle laser driven wakefield

Effect of sharp vacuum-plasma boundary on the electron injection and acceleration in a few-cycle laser driven wakefield

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