Dependence of electron trapping on bubble geometry in laser-plasma wakefield acceleration

被引：4
|
作者：
Li, X. F. [1 ]
Gu, Y. J. [1 ,2 ]
Yu, Q. [1 ]
Huang, S. [1 ]
Zhang, F. [1 ]
Kong, Q. [1 ]
Kawata, S. [3 ]
机构：
[1] Fudan Univ, Appl Ion Beam Phys Lab, Key Lab, Minist Educ,Inst Modern Phys, Shanghai 200433, Peoples R China
[2] ASCR, Inst Phys, ELI Beamlines Project, Prague 18221, Czech Republic
[3] Utsunomiya Univ, Dept Adv Interdisciplinary Sci, Utsunomiya, Tochigi 3218585, Japan
来源：
PHYSICS OF PLASMAS | 2014年 / 21卷 / 07期
关键词：
WAVE; EXCITATION; DRIVEN;
D O I：
10.1063/1.4891665
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
The effect of bubble shape in laser-plasma electron acceleration was investigated. We showed the general existence of an ellipsoid bubble. The electromagnetic field in this bubble and its dependence on bubble shape were determined through theory. The electron-trapping cross-section for different bubble aspect ratios was studied in detail. When the shape of the bubble was close to spherical, the trapping cross-section reached to the maximum. When the bubble deviated from a spherical shape, the cross-section decreased until electron injection no longer occurred. These results were confirmed by particle-in-cell simulation. (C) 2014 AIP Publishing LLC.
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页数：6
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