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15 TW激光与氮气作用产生稳定电子束的实验研究

李毅飞, 李大章, 王进光, 朱常青, 冯杰, 何雨航, 陈黎明

李毅飞, 李大章, 王进光, 朱常青, 冯杰, 何雨航, 陈黎明. 15 TW激光与氮气作用产生稳定电子束的实验研究[J]. 原子能科学技术, 2019, 53(9): 1621-1628. DOI: 10.7538/yzk.2019.youxian.0203
引用本文: 李毅飞, 李大章, 王进光, 朱常青, 冯杰, 何雨航, 陈黎明. 15 TW激光与氮气作用产生稳定电子束的实验研究[J]. 原子能科学技术, 2019, 53(9): 1621-1628. DOI: 10.7538/yzk.2019.youxian.0203
shu
LI Yifei, LI Dazhang, WANG Jinguang, ZHU Changqing, FENG Jie, HE Yuhang, CHEN Liming. Experimental Study on Stable Electron Beam Generation from 15 TW Laser Interacting with Nitrogen[J]. Atomic Energy Science and Technology, 2019, 53(9): 1621-1628. DOI: 10.7538/yzk.2019.youxian.0203
Citation: LI Yifei, LI Dazhang, WANG Jinguang, ZHU Changqing, FENG Jie, HE Yuhang, CHEN Liming. Experimental Study on Stable Electron Beam Generation from 15 TW Laser Interacting with Nitrogen[J]. Atomic Energy Science and Technology, 2019, 53(9): 1621-1628. DOI: 10.7538/yzk.2019.youxian.0203
shu

15 TW激光与氮气作用产生稳定电子束的实验研究

  • 中国科学院 物理研究所 光物理重点实验室,北京100190

  • 中国科学院 高能物理研究所 加速器中心,北京100049

  • 中国科学院 物理研究所 松山湖材料实验室,广东 东莞523808

Experimental Study on Stable Electron Beam Generation from 15 TW Laser Interacting with Nitrogen

  • Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China

  • Accelerator Division, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China

  • Songshan Lake Materials Laboratory, Institute of Physics, Chinese Academy of Sciences, Dongguan 523808, China

摘要

    摘要
  • 摘要: 利用15 TW激光脉冲，系统研究了基于电离化注入的激光尾波场加速。实验中，研究了等离子体密度、相互作用位置、激光脉宽以及激光能量对电子束的电荷量、发散角、指向性、能量以及产生概率的影响。将约400 mJ、25 fs的激光脉冲聚焦在喷嘴前沿，等离子体密度约9×1018 cm-3时，电子的产生概率高达100%，获得了水平（竖直）发散角（6.5±0.5） mrad（（5.3±0.3） mrad）、水平（竖直）指向稳定性±1.2 mrad （±0.7 mrad）、峰值能量（135±8） MeV和电荷量（13.5±2.0） pC（＞50 MeV）的稳定电子束，为其应用奠定了基础。

     

    Abstract: The 15 TW laser pulses were used to systematically study laser wakefield acceleration based on ionization injection. In the experiments, the influence of plasma density, interaction position, laser pulse duration and laser energy on the charge, divergence, pointing stability, energy and generation probability of electron beams was studied. When laser pulses with about 400 mJ and 25 fs are focused on the nozzle’s front and plasma density is about 9×1018 cm-3, the generation probability of electron beams is as high as 100%. And, stable electron beams with horizontal (vertical) divergence of (6.5±0.5) mrad ((5.3±0.3) mrad), horizontal (vertical) pointing stability of ±1.2 mrad (±0.7 mrad), peak energy of (135±8) MeV and charge of (13.5± 2.0) pC (>50 MeV) are obtained, paving a solid foundation for its application.

     

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  • 刊出日期:  2019-09-19

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