外文题目: Enhancing the electron acceleration by a circularly polarized laser interaction with a cone-target with an external longitudinal magnetic field
作者: Gong, J. X.; Cao, L. H.; Pan, K. Q.; Xiao, C. Z.; Wu, D.; He, X. T.
刊名: Phys. Plasmas
年: 2017 卷: 24 期: 3 文章编号：33103
英文关键词:

PLASMA; BEAMS; PROPAGATION; PULSES; GENERATION; WAKEFIELD; CHANNEL; DRIVEN
英文摘要:
The propagation of left-hand (LH-) and right-hand (RH-) circularly polarized (CP) lasers and the accompanying generation of fast electrons in a magnetized cone-target with pre-formed plasmas are investigated. In this work, the strength of external magnetic field is comparable to that of the incident laser. Theoretical analyses indicate that the cut-off density of LH-CP laser is larger than that without an external magnetic field. When the external magnetic field normalized by the laser magnetic field is larger than the relativistic factor, the RH-CP laser will keep on propagating till the laser energy is depleted. The theoretical predictions are confirmed by two-dimensional particle-in-cell simulations. Simulation results show that in the presence of external longitudinal magnetic field, the energies and yields of fast electrons are greatly enhanced for RH-CP laser. Besides, the coupling efficiency of laser energy to energetic electrons for RH-CP laser is much higher than that for LH-CP laser and without external magnetic field. Furthermore, detailed simulation results perform an enhancement of the incident laser absorption with increasing external magnetic field. Published by AIP Publishing.


文献类型: 期刊论文
正文语种: English
收录类别: SCI
DOI: 10.1063/1.4977526


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