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Effects of pulse temporal profile on electron bow-wave injection of electrons in laser-driven bubble acceleration

Zhang Guo-Bo Zou De-Bin Ma Yan-Yun Zhuo Hong-Bin Shao Fu-Qiu Yang Xiao-Hu Ge Zhe-Yi Yin Yan Yu Tong-Pu Tian Cheng-Lin Gan Long-Fei Ouyang Jian-Ming Zhao Na

Effects of pulse temporal profile on electron bow-wave injection of electrons in laser-driven bubble acceleration

Zhang Guo-Bo, Zou De-Bin, Ma Yan-Yun, Zhuo Hong-Bin, Shao Fu-Qiu, Yang Xiao-Hu, Ge Zhe-Yi, Yin Yan, Yu Tong-Pu, Tian Cheng-Lin, Gan Long-Fei, Ouyang Jian-Ming, Zhao Na
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  • Received Date:  08 May 2013
  • Accepted Date:  08 July 2013
  • Published Online:  20 October 2013

Effects of pulse temporal profile on electron bow-wave injection of electrons in laser-driven bubble acceleration

  • 1. College of Science, National University of Defense Technology, Changsha 410073, China
Fund Project:  Project supported by the National Basic Research Program of China (Grant No. 2013CBA01500), the Research Program of National University of Defense Technology, China, 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, 11375265), and the Young Scientists Fund of the National Natural Science Foundation of China (Grant Nos. 11205243, 11205242, 11305264).

Abstract: Effects of pulse temporal profile on electron injection and trapping in the electron bow-wave injection regime are investigated by two-dimensional particle-in-cell simulations. It is found that a positive skew pulse can enhance the wake-field amplitude, extends the accelerating aera, and improves the initial velocity of electrons injected into the bubble. Thus more energetic electrons are driven into the bubble accelerating phase. The total injection number for a positive skew pulse is higher than those of negative skew and usual Gaussian pulses in the same conditions, and the quality of electron beam is also improved. The obtained result is very important and beneficial for the future experimental investigation of the laser wake-field acceleration to obtain an energetic electron beam with a large charge quantity.

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