准直光
脉冲持续时间
持续时间(音乐)
质子
拉盖尔多项式
脉搏(音乐)
高斯分布
激光器
物理
光学
核物理学
声学
量子力学
探测器
作者
M. Wang,W. P. Wang,Zhiyong Shi,Huiting Ma,Fengyu Sun,Xin-Yue Sun,Zhengxing Lv,Yuxin Leng,Ruxin Li
标识
DOI:10.1088/1361-6587/ad42d4
摘要
Abstract 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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