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arXiv 1807.04147physics.plasm-phphysics.acc-phphysics.optics
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laser等离子体加速器拓扑的光学控制

Optical control of the topology of laser-plasma accelerators

J. Vieira, J. T. Mendonça, F. Quéré

摘要:

提出了一种能够产生具有螺旋电流分布的相对论电子涡旋束的扭曲等离子体加速器。这些涡束的角动量是量子化的,主导着它们的横向运动,并导致在扭曲的尾流场周围的螺旋粒子轨迹。我们专注于激光尾流场加速的情况下,驱动的激光束与螺旋时空强度分布,也被称为光弹簧。我们发现,这些轻弹簧可以旋转,因为他们激发扭曲的等离子体尾场,提供了一种新的机制来控制扭曲的尾场相速度,提高能量增益和捕获效率超过平面尾场。

英文摘要:

We propose a twisted plasma accelerator capable of generating relativistic electron vortex beams with helical current profiles. The angular momentum of these vortex bunches is quantized, dominates their transverse motion, and results in spiraling particle trajectories around the twisted wakefield. We focus on a laser wakefield acceleration scenario, driven by a laser beam with a helical spatiotemporal intensity profile, also known as a light spring. We find that these light springs can rotate as they excite the twisted plasma wakefield, providing a new mechanism to control the twisted wakefield phase velocity and enhance energy gain and trapping efficiency beyond planar wakefields.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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