Abstract
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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All authors contributed to the study conception and design. Experiment was carried out by Qiu-Shi Liu, Ming-Jiang Ma, Bao-Zhen Zhao, Xiao-Hua Zhang, Xiang-Hao Meng, and Xiao-Na Ban. Data analysis was performed by Qiu-Shi Liu, Bing Guo, Chong Lv, Ji Zhang, Bao-Xian Tian, and Chuang-Ye He. Optical diagnosis system was set up by Qiu-Shi Liu, Ming-Jiang Ma, Zhao Wang, and Xiao-Feng Xi. The first draft of the manuscript was written by Qiu-Shi Liu, and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.
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This work was supported by the Programs for the National Natural Science Foundation of China (Nos. 11975316, 11775312, 12005305 and 61905287) and the Continue Basic Scientific Research Project (Nos. WDJC-2019-02 and BJ20002501).
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Liu, QS., Ma, MJ., Zhao, BZ. et al. Effect of multiple parameters on the supersonic gas-jet target characteristics for laser wakefield acceleration. NUCL SCI TECH 32, 75 (2021). https://doi.org/10.1007/s41365-021-00910-1
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DOI: https://doi.org/10.1007/s41365-021-00910-1