Radiative trapping in intense laser beams

被引:37
作者
Kirk, J. G. [1 ]
机构
[1] Max Planck Inst Kernphys, Postfach 10 39 80, D-69029 Heidelberg, Germany
关键词
laser plasmas; electron dynamics; pair cascades; QED plasmas; radiation reaction; ELECTROMAGNETIC-WAVES; ACCELERATION; EMISSION; MOTION; PLANE;
D O I
10.1088/0741-3335/58/8/085005
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
The dynamics of electrons in counter-propagating, circularly polarized laser beams are shown to exhibit attractors whose ability to trap particles depends on the ratio of the beam intensities and a single parameter describing radiation reaction. Analytical expressions are found for the underlying limit cycles and the parameter range in which they are stable. In high-intensity optical pulses, where radiation reaction strongly modifies the trajectories, the production of collimated gamma-rays and the initiation of non-linear cascades of electron-positron pairs can be optimized by a suitable choice of the intensity ratio.
引用
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页数:11
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