Radiation sources based on laser-plasma interactions
Radiation sources based on laser-plasma interactions
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DOI：
10.1098/rsta.2005.1732
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发表时间：
2006-03-15
期刊：
影响因子：
5
通讯作者：
Wiggins, SM
中科院分区：
文献类型：
--
作者：
Jaroszynski, DA;Bingham, R;Wiggins, SM
利用强激光束激发的等离子体波可以产生具有相对论能量的飞秒电子束。等离子体密度尾流的非常大的静电力尾随在强激光脉冲之后，提供了能够在非常短的距离内将带电粒子加速到高能量的场电位，在几毫米内高达1 GeV。等离子体波的短长度尺度提供了一种开发非常紧凑的高能加速器的方法，这可以形成具有独特特性的紧凑型下一代光源的基础。持续时间在5飞秒或以下的可调谐X射线辐射和粒子脉冲应该是可能的，并将有助于在前所未有的时间和空间尺度上探测物质。如果这项革命性的技术得到发展，它可以将光源的尺寸和成本降低三个数量级，从而为大型科学界提供强大的新工具。我们将讨论如何利用激光驱动等离子体韦克菲尔德加速器来产生在很大光谱范围内具有独特特性的辐射。
Plasma waves excited by intense laser beams can be harnessed to produce femtosecond duration bunches of electrons with relativistic energies. The very large electrostatic forces of plasma density wakes trailing behind an intense laser pulse provide field potentials capable of accelerating charged particles to high energies over very short distances, as high as 1 GeV in a few millimetres. The short length scale of plasma waves provides a means of developing very compact high-energy accelerators, which could form the basis of compact next-generation light sources with unique properties. Tuneable X-ray radiation and particle pulses with durations of the order of or less than 5 fs should be possible and would be useful for probing matter on unprecedented time and spatial scales. If developed to fruition this revolutionary technology could reduce the size and cost of light sources by three orders of magnitude and, therefore, provide powerful new tools to a large scientific community. We will discuss how a laser-driven plasma wakefield accelerator can be used to produce radiation with unique characteristics over a very large spectral range.