Optimal collimation of proton beams accelerated by a Laguerre-Gaussian laser with a proper pulse duration

被引：1
作者：
Wang, Mengjiao [1 ,2 ,3 ]
Wang, Wenpeng [1 ,2 ]
Shi, Zhiyong [1 ,2 ]
Ma, Huiting [1 ,2 ]
Sun, Fengyu [1 ,2 ,3 ,4 ]
Sun, Xinyue [1 ,2 ,3 ]
Lv, Zhengxing [1 ,2 ]
Leng, Yuxin [1 ,2 ,4 ]
Li, Ruxin [1 ,2 ,4 ]
机构：
[1] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech SIOM, State Key Lab High Field Laser Phys, Shanghai 201800, Peoples R China
[2] Chinese Acad Sci, CAS Ctr Excellence Ultraintense Laser Sci, Shanghai 201800, Peoples R China
[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[4] ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China
来源：
PLASMA PHYSICS AND CONTROLLED FUSION | 2024年 / 66卷 / 06期
基金：
中国国家自然科学基金; 上海市自然科学基金;
关键词：
Laguerre-Gaussian laser; laser driven proton acceleration; particle-in-cell simulation; ORBITAL ANGULAR-MOMENTUM; GENERATION; DRIVEN; IRRADIATION;
D O I：
10.1088/1361-6587/ad42d4
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
In this study, three-dimensional particle-in-cell (PIC) simulations were conducted to evaluate a collimated proton beam accelerated by an intense Laguerre-Gaussian (LG) laser with different pulse durations. The flux and energy of the collimated proton beam could be simultaneously enhanced by selecting an optimal pulse duration. This phenomenon can be primarily attributed to the correlation between the LG laser driven self-generated magnetic field and pulse duration, and this correlation enables the collimation of protons during their interaction and transport. The results obtained in this study elucidate the formation mechanism of different collimated proton patterns, driven by femtosecond and picosecond LG lasers, observed in previous experiments. In addition, based on these results, an optimum pulse duration for high-quality proton beams is proposed for various future applications.
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页数：8
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