Linearly tapered discharge capillary waveguides as a medium for a laser plasma wakefield accelerator
Linearly tapered discharge capillary waveguides as a medium for a laser plasma wakefield accelerator
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DOI：
10.1063/1.3674309
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发表时间：
2012-01-02
影响因子：
4
通讯作者：
Jaroszynski, D. A.
中科院分区：
文献类型：
--
作者：
Abuazoum, S.;Wiggins, S. M.;Jaroszynski, D. A.
充气毛细管放电波导通常用作等离子体韦克菲尔德加速器的介质。我们表明，有效的波导可以制造使用飞秒激光微加工技术，以产生线性锥形等离子体密度，这使得加速器的能量显着增强。在直径从320 μ m逐渐变细到270 μ m的40 mm长毛细管中，在亚相对论强度下，激光引导效率超过82%，产生的轴上时间平均等离子体密度从1.0 × 10 ~（18）cm ~（-3）变化到1.6 × 10 ~（18）cm ~（-3）。(C)2012年美国物理学会。[doi：10.1063/1.3674309]
Gas-filled capillary discharge waveguides are commonly used as media for plasma wakefield accelerators. We show that effective waveguides can be manufactured using a femtosecond laser micromachining technique to produce a linearly tapered plasma density, which enables the energy of the accelerator to be enhanced significantly. A laser guiding efficiency in excess of 82% at sub-relativistic intensities has been demonstrated in a 40mm long capillary with a diameter tapering from 320 mu m to 270 mu m, which gives rise to an on-axis, time-averaged plasma density that varies from 1.0 x 10(18) cm(-3) to 1.6 x 10(18) cm(-3). (C) 2012 American Institute of Physics. [doi: 10.1063/1.3674309]