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Self-Injection and Acceleration of Monoenergetic Electron Beams from Laser Wakefield Accelerators in a Highly Relativistic Regime |
| H. Yoshitama1, T. Kameshima1, GU Yu-Qiu3, GUO Yi3, JIAO Chun-Ye3, LIU Hong-Jie3, PENG Han-Sheng3, TANG Chuan-Ming3, WANG Xiao-Dong3, WEN Xian-Lun3, WEN Tian-Shu3, WU Yu-Chi3, ZHANG Bao-Han3, ZHU Qi-Hua3, HUANG Xiao-Jun4, AN Wei-Min4, HUNG Wen-Hui4, TANG Chuan-Xiang4, LIN Yu-Zheng4, WANG Xiao-Dong5, CHEN Li-Ming6, H.~Kotaki6, M.~Kando6, K.~Nakajima1,2,6 |
| 1Department of Accelerator Science, The Graduate University for Advanced Studies, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan2High Energy Accelerator Research Organization, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan3Laser Fusion Research Center, China Academy of Engineering Physics, Sichuan 6219004Department of Engineering Physics, Tsinghua University, Beijing 1000845University of Southern California, Los Angels, CA90089-0484, USA6Kansai Photon Science Institute, Japan Atomic Energy Agency, Kyoto 619-0215, Japan |
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| Cite this article: |
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H. Yoshitama, T. Kameshima, GU Yu-Qiu et al 2008 Chin. Phys. Lett. 25 2938-2941 |
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Abstract Self-injection and acceleration of monoenergetic electron beams from laser wakefield accelerators are first investigated in the highly relativistic regime, using 100TW class, 27fs laser pulses. Quasi-monoenergetic multi-bunched beams with energies as high as multi-hundredMeV are observed with simultaneous measurements of side-scattering emissions that indicate the formation of self-channelling and self-injection of electrons into a plasma wake, referred to as a `bubble'. The three-dimensional particle-in-cell simulations confirmed multiple self-injection of electron bunches into the bubble and their beam acceleration with gradient of 1.5GeV/cm.
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| Keywords:
52.38.Kd
41.75.Jv
52.38.Hb
52.38.-r
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Received: 26 March 2008
Published: 25 July 2008
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| PACS: |
52.38.Kd
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(Laser-plasma acceleration of electrons and ions)
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41.75.Jv
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(Laser-driven acceleration?)
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52.38.Hb
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(Self-focussing, channeling, and filamentation in plasmas)
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52.38.-r
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(Laser-plasma interactions)
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