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Collimated quasi-monoenergetic protons from interaction of two intersecting lasers with thin double-layer target

机译：两种交叉激光器与薄双层目标相互作用的准直的准单元素质子

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摘要

The acceleration of protons from the interaction of two intersecting laser pulses in a double-layer target, consisting of a carbon slab with a thin hydrogen layer behind it, is investigated. It is found that a bunch of well-collimated, up to 270 MeV, quasi-monoenergetic protons can be generated. The affected target electrons are heated and accelerated forward by the laser pulses so that the target gradually becomes transparent as the lasers bore into it. Eventually, the thin target becomes fully transparent. The converging laser pulses can then pass through it and the hot backside electron cloud, together with the electrons trapped in them. As a result, behind the target, an inhomogeneous sheath electric field is formed, which not only accelerates the protons but also merges them into a quasi-monoenergetic bunch with low divergence. The energy and spatial spread of the bunch, as well as the peak energy, can be controlled by manipulating the locations of the two lasers. Published under license by AIP Publishing.
机译：研究了来自两个交叉激光脉冲在双层靶标中的相互作用的质子的加速，由碳板组成，其中含有薄氢层的碳板。发现一堆良好准直，最多270 meV，可以产生准单体植物质子。受影响的目标电子被激光脉冲加热并加速，使得当激光器孔进入其中，目标逐渐变得透明。最终，薄目标变得完全透明。然后，会聚激光脉冲可以通过它和热背面电子云，以及捕获的电子。结果，在目标后面，形成不均匀的护套电场，这不仅加速了质子，而且还将它们与低发散的准统计学束合并。通过操纵两个激光器的位置，可以控制束的能量和空间扩展以及峰值能量。通过AIP发布在许可证下发布。

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  • 来源
    《Physics of plasmas》 |2019年第3期|共5页
  • 作者

    Tong Sheng-Fei; Sheng Zheng-Mao; Yu M. Y.;

  • 作者单位

    Zhejiang Univ Inst Fus Theory &

    Simulat Hangzhou 310027 Peoples R China;

    Zhejiang Univ Inst Fus Theory &

    Simulat Hangzhou 310027 Peoples R China;

    Zhejiang Univ Inst Fus Theory &

    Simulat Hangzhou 310027 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 等离子体物理学;
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