激光脉冲的横向波形对弓形波电子俘获的影响

张国博; 马燕云; 邹德滨; 卓红斌; 邵福球; 杨晓虎; 葛哲屹; 余同普; 田成林; 欧阳建明; 赵娜

doi:10.7498/aps.62.125205

摘要

用粒子模拟研究了在激光尾波场电子弓形波注入过程中激光脉冲的横向波形对尾波场俘获电子数目的影响, 发现与高斯激光相比, 超高斯形激光更有利于拉动空泡闭合前侧边的电子团向空泡尾部汇聚形成高能量局域化的弓形波, 从而导致更多的电子注入到空泡的加速相, 使得被俘获的电子数目提高近5倍, 且电子束品质得到改善.该研究对于进一步理解尾波场加速中电子注入等有参考价值.

关键词:

In this paper we study the effects of transverse profile of incident laser on trapping of electrons in an electron bow-wave injection regime. By using the particle-in-cell code, we find that the super-gaussian profile laser pulse can drive more energetic electrons of the electron bow-wave into the bubble with higher longitudinal injection velocity. At last, the total number of trapped electrons increases almost 5 times. And the quality of electron beam is also improved obviously.

Keywords:

作者及机构信息

1.
国防科学技术大学理学院, 长沙 410073

基金项目: 国家自然科学基金-中国工程物理研究院联合基金 (批准号: 10976031)、国家自然科学基金(批准号: 11175253, 10975121, 10935002)、国家自然科学基金青年科学基金(批准号: 11205243)和教育部高等学校博士学科点专项科研基金 (批准号: 20114307110020)资助的课题.

Authors and contacts

1.
College of Science, National University of Defense Technology, Changsha 410073, China

Funds: Project supported by the Joint Fund of the National Natural Science Foundation of China and the China Academy of Engineering Physics (Grant No. 10976031), the National Natural Science Foundation of China (Grant Nos. 11175253, 10975121, 10935002), the Young Scientists Fund of the National Natural Science Foundation of China (Grant No. 11205243), and the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20114307110020).

参考文献

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[15]	Ma Y Y, Kawata S, Yu T P, Gu Y Q, Sheng Z M, Yu M Y, Zhuo H B, Liu H J, Yin Y, Takahashi K, Xie X Y, Liu J X, Tian C L, Shao F Q 2012 Phys. Rev. E 85 046403
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施引文献

[1]	Malka V 2012 Phys. Plasmas 19 055501
[2]	Esarey E, Schroeder C B, Leemans W P 2009 Rev. Mod. Phys. 81 1229
[3]	Leemans W P, Nagler B, Gonsalves A J, Tóth C, Nakamura K, Geddes C G R, Esarey E, Schroeder C B, Hooker S M 2006 Nature Phys. 2 696
[4]	Tabak M, Hammer J, Glinsky M E, Kruer W L, Wilks S C, Woodworth J, Campbell E M, Perry M D, Mason R J 1994 Phys. Plasmas 1 1626
[5]	Ma Y Y, Sheng Z M, Li Y T, Chang W W, Yuan X H, Chen M, Wu H C, Zheng J, Zhang J 2006 Phys. Plasmas 13 110702
[6]	Wilks S C, Langdon A B, Cowan T E, Roth M, Singh M, Hatchett S, Key M H, Pennington D, MacKinnon A, Snavely R A 2001 Phys. Plasmas 8 542
[7]	van Tilborg J, Schroeder C B, Filip C V, Tóth C, Geddes C G R, Fubiani G, Huber R, Kaindl R A, Esarey E, Leemans W P 2006 Phys. Rev. Lett. 96 014801
[8]	Esarey E, Shadwick B A, Catravas P, Leemans W P 2002 Phys. Rev. E 65 056505
[9]	Rousse A, Phuoc K T, Shah R, Pukhov A, Lefebvre E, Malka V, Kiselev S, Burgy F, Rousseau J P, Umstadter D, Hulin D 2004 Phys. Rev. Lett. 93 135005
[10]	Ge Z Y, Yin Y, Li S X, Yu M Y, Yu T P, Xu H, Zhuo H B, Ma Y Y, Shao F Q, Tian C L 2012 New J. Phys. 14 103015
[11]	Suk H, Barov N, Rosenzweig J B, Esarey E 2001 Phys. Rev. Lett. 86 6
[12]	Chen M, Sheng Z M, Ma Y Y, Zhang J 2006 J. Appl. Phys. 99 056109
[13]	Xu H, Chang W W, Yin Y, Zhuo H B 2004 Acta Phys. Sin. 53 818 (in Chinese) [徐涵, 常文蔚, 银燕, 卓红斌 2004 物理学报 53 818]
[14]	Xu H, Chang W W, Yin Y, Zhuo H B, Ma Y Y 2003 Acta Phys. Sin. 52 1702 (in Chinese) [徐涵, 常文蔚, 银燕, 卓红斌, 马燕云2003 物理学报 52 1702]
[15]	Ma Y Y, Kawata S, Yu T P, Gu Y Q, Sheng Z M, Yu M Y, Zhuo H B, Liu H J, Yin Y, Takahashi K, Xie X Y, Liu J X, Tian C L, Shao F Q 2012 Phys. Rev. E 85 046403
[16]	Ma Y Y, Chang W W, Yin Y, Yue Z W, Cao L H, Liu D Q 2000 Acta Phys. Sin. 49 1518 (in Chinese) [马燕云, 常文蔚, 银燕, 岳宗五, 曹丽华, 刘大庆 2000 物理学报 49 1518]
[17]	Ma Y Y, Chang W W, Yin Y, Cao L H, Yue Z W 2002 Chin. J. Comput. Phys. 19 311 (in Chinese) [马燕云, 常文蔚, 银燕, 曹莉华, 岳宗五 2002 计算物理 19 311]
[18]	Wu H C, Xie B S, Zhang S, Hong X R, Zhao X Y, Liu M P 2010 Phys. Plasmas 17 113103

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