Electron bow-wave injection of electrons in laser-driven bubble acceleration

被引：21

作者：

Ma, Y. Y. ^{[1
,2
,3
]}

Kawata, S. ^{[2
]}

Yu, T. P. ^{[1
,4
]}

Gu, Y. Q. ^{[2
]}

Sheng, Z. M. ^{[5
]}

Yu, M. Y. ^{[6
,7
]}

Zhuo, H. B. ^{[1
]}

Liu, H. J. ^{[2
]}

Yin, Y. ^{[1
]}

Takahashi, K. ^{[2
]}

Xie, X. Y. ^{[1
]}

Liu, J. X. ^{[1
]}

Tian, C. L. ^{[1
]}

Shao, F. Q. ^{[1
]}

机构：

[1] Natl Univ Def Technol, Coll Sci, Changsha 410073, Hunan, Peoples R China

[2] Utsunomiya Univ, Grad Sch Engn, Ctr Opt Res & Educ, Utsunomiya, Tochigi 3218585, Japan

[3] China Acad Engn Phys, Laser Fus Res Ctr, Mianyang 621000, Peoples R China

[4] Univ Dusseldorf, Inst Theoret Phys 1, D-40225 Dusseldorf, Germany

[5] Shanghai Jiao Tong Univ, Dept Phys, Shanghai 200240, Peoples R China

[6] Zhejiang Univ, Dept Phys, Inst Fus Theory & Simulat, Hangzhou 310027, Zhejiang, Peoples R China

[7] Ruhr Univ Bochum, D-44801 Bochum, Germany

来源：

PHYSICAL REVIEW E | 2012年 / 85卷 / 04期

基金：

中国国家自然科学基金;

关键词：

WAKEFIELD; BEAMS; PULSES;

D O I：

10.1103/PhysRevE.85.046403

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：

An electron injection regime in laser wake-field acceleration, namely electron bow-wave injection, is investigated by two-and three-dimensional particle-in-cell simulation as well as analytical model. In this regime electrons in the intense electron bow wave behind the first bubble catch up with the bubble tail and are trapped by the bubble finally, resulting in considerable enhancement of the total trapped electron number. For example, with the increase of the laser intensity from 2 x 10(19) to 1 x 10(20) W/cm(2), the electron trapping changes from normal self-injection to bow-wave injection and the trapped electron number is enhanced by two orders of magnitude. An analytical model is proposed to explain the numerical observation.

引用

页数：5

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