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首页> 外文期刊>Plasma physics and controlled fusion >Enhanced electron-positron pair production by two obliquely incident lasers interacting with a solid target
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Enhanced electron-positron pair production by two obliquely incident lasers interacting with a solid target

机译：通过两个倾斜的入射激光器产生增强的电子正电子对生产与固体靶相互作用

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摘要

Enhanced electron-positron (e(-)e(+)) pair production using two obliquely incident lasers interacting with a solid target is investigated through multi-dimensional particle-in-cell (PIC) simulations. Two obliquely incident lasers can strengthen the laser-hole boring effect, which enhances the reflected focusing laser field and the consequent quantum electrodynamics effects. PIC simulations show that by using two 10 PW-scale lasers, a high-yield (3 x 10(10)) overdense (similar to 10(22) cm(-3)) positron beam can be generated and laser to pair energy conversion efficiency can be increased up to one percent. Such positron yield is fifty times higher than that produced from a single laser with the same peak power. The robustness of such a scheme is confirmed by numerically studying parametric influences of the oblique incident angle, temporal asynchrony and phase difference between the two lasers. It is found that the temporal asynchrony and the phase difference have minor effects on the pair production. The proposed scheme may provide great potential for high dense pair plasma generation in experiments with coming approachable high power laser facilities.
机译：通过多维粒子内 - 细胞（PIC）模拟，研究了使用与固体靶相互作用的两个倾斜入射激光器的增强的电子 - 正电子（E（ - ）E（+））对产生。两个倾斜入射激光器可以加强激光孔钻孔效果，这增强了反射的聚焦激光场和随后的量子电动动力学效应。 PIC模拟表明，通过使用两个10个PW级激光器，可以产生高屈服（3×10（10）厘米）的溢出（类似于10（22）厘米（-3））正电子束和激光以配对能量转换效率可以增加到一个百分点。这种正电子收益率高于具有相同峰值功率的单个激光器的50倍。通过数值研究倾斜入射角，时间异步和两个激光器之间的相位差的数值研究来确认这种方案的鲁棒性。结果发现时间异步和相位差对该对生产具有轻微影响。所提出的方案可以在实验中提供高密集对等离子体生成的巨大潜力，具有可实现的高功率激光器设施。

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  • 作者

    Luo Wen; Wu Shao-Dong; Liu Wei-Yuan; Ma Yan-Yun; Li Fei-Yu; Yuan Tao; Yu Ji-Ye; Chen Min; Sheng Zheng-Ming;

  • 作者单位

    Univ South China Sch Nucl Sci &

    Technol Hengyang 421001 Peoples R China;

    Univ South China Sch Nucl Sci &

    Technol Hengyang 421001 Peoples R China;

    Univ South China Sch Nucl Sci &

    Technol Hengyang 421001 Peoples R China;

    Natl Univ Def Technol Coll Liberal Arts &

    Sci Changsha 410073 Hunan Peoples R China;

    Univ Strathclyde Dept Phys SUPA Glasgow G4 0NG Lanark Scotland;

    Shanghai Jiao Tong Univ Sch Phys &

    Astron Key Lab Laser Plasmas MoE Shanghai 200240 Peoples R China;

    Shanghai Jiao Tong Univ Sch Phys &

    Astron Key Lab Laser Plasmas MoE Shanghai 200240 Peoples R China;

    Shanghai Jiao Tong Univ Sch Phys &

    Astron Key Lab Laser Plasmas MoE Shanghai 200240 Peoples R China;

    Univ Strathclyde Dept Phys SUPA Glasgow G4 0NG Lanark Scotland;

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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;
  • 关键词

    quantum electrodynamics effects; electron-positron pair production; 10 PW laser;

    机译：量子电动动力学效应;电子正电子对生产;10 PW激光;

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