Effect of multiple parameters on the supersonic gas-jet target characteristics for laser wakefield acceleration

Effect of multiple parameters on the supersonic gas-jet target characteristics for laser wakefield acceleration
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多参数对激光尾场加速超音速气体射流目标特性的影响

DOI:
10.1007/s41365-021-00910-1
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发表时间:
2021-07
影响因子:
2.8
通讯作者:
Bing Guo
Bing Guo
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Qiu-Shi Liu;Mingjiang Ma;Bao-Zhen Zhao;Xiao-Hua Zhang;Chong Lv;Xiang-Hao Meng;Ji Zhang;Xiao-Na Ban;Zhao Wang;Xiao-Feng Xi;Bao-Xian Tian;Chuang-Ye He;Bing Guo

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超音速气体射流靶是激光尾场加速(LWFA)的重要实验靶,在驱动电子感应加速器辐射和康普顿散射伽马射线等新型辐射源方面具有巨大潜力。根据不同的电子加速要求,需要提供不同密度分布的特定超音速气体射流,以产生高质量、高重复率的电子束。在这项研究中,通过改进的Nomarski干涉诊断系统获得了不同气体射流目标的干涉图像和密度分布。研究了气体密度与背压、喷嘴结构和其他关键参数之间的关系。不同特点的目标有利于满足LWFA的各种要求。
The supersonic gas-jet target is an important experimental target for laser wakefield acceleration (LWFA), which has great potential for driving novel radiation sources such as betatron radiation and Compton scattering gamma rays. According to different electron acceleration requirements, it is necessary to provide specific supersonic gas jets with different density profiles to generate electron beams with high quality and high repetition rates. In this study, the interference images and density profiles of different gas-jet targets were obtained through a modified Nomarski interference diagnosis system. The relationships between the gas density and back pressure, nozzle structure, and other key parameters were studied. Targets with different characteristics are conducive to meeting the various requirements of LWFA.
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