Test particle simulation of direct laser acceleration in a density-modulated plasma waveguide

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題名:	Test particle simulation of direct laser acceleration in a density-modulated plasma waveguide
作者:	林明緯;Lin, M.-W.;Jovanovic, I.
貢獻者:	理學院物理學系
關鍵詞:	70 PLASMA PHYSICS AND FUSION TECHNOLOGY;ACCELERATION;Density;ELECTRIC FIELDS;ELECTRONS;LASERS;Mathematical analysis;Modulation;PLASMA;Plasma (physics);PLASMA SIMULATION;PULSES;TEST PARTICLES;Tolerances;WAVEGUIDES
日期:	2012-11-01
上傳時間:	2026-04-23 14:39:56 (UTC+8)
出版者:	American Institute of Physics;United States
摘要:	摘要： Direct laser acceleration (DLA) of electrons by the use of the intense axial electric field of an ultrafast radially polarized laser pulse is a promising technique for future compact accelerators. Density-modulated plasma waveguides can be implemented for guiding the propagation of the laser pulse to extend the acceleration distance and for the quasi-phase-matching between the accelerated electrons and the laser pulse. A test particle model is developed to study the optimal axial density modulation structure of plasma waveguides for laser pulses to efficiently accelerate co-propagating electrons. A simple analytical approach is also presented, which can be used to estimate the energy gain in DLA. The analytical model is validated by the test particle simulation. The effect of injection phase and acceleration of electrons injected at various radial positions are studied. The results indicate that a positively chirped density modulation of the waveguide structure is required to accelerate electron with low initial energies, and can be effectively optimized. A wider tolerance on the injection phase and radial distance from the waveguide axis exists for electrons injected with a higher initial energy. 出版者： United States 出版日期： 2012-11-01 出處： Physics of plasmas, 2012-11, Vol.19 (11) 資源來源： AIP Journals (American Institute of Physics) 識別號： ISSN: 1070-664X 識別號： EISSN: 1089-7674 識別號： DOI: 10.1063/1.4766166
顯示於類別:	[物理學系] 期刊論文

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