High-charge energetic electron bunch generated by intersecting laser pulses

Yang, Lei; Deng, Zhigang; Zhou, C. T.; Yu, M. Y.; Wang, Xingang
March 2013
Physics of Plasmas;Mar2013, Vol. 20 Issue 3, p033102
Academic Journal
The interaction of two energetic electron bunches generated in the wakefields of two intense intersecting laser pulses in rarefied plasmas is investigated using particle-in-cell simulations. It is found that, with suitable intersection angle between the two laser pulses, the initially independent wakefield accelerated electron bunches can merged into a single one with high charge, energy, and narrow energy spread. The dynamics of the laser-pulse intersection and wake-bubble merging process is also investigated, and the crucial roles of the intersection angle are pointed out and analyzed.


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