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ShanghaiTech University Knowledge Management System
| Enhanced Proton Acceleration via Petawatt Laguerre-Gaussian Lasers | |
| 2025-01-22 | |
| 状态 | 已发表 |
| 摘要 | High-energy, high-flux collimated proton beams with high repetition rates are critical for applications such as proton therapy, proton radiography, high-energy-density matter generation, and compact particle accelerators. However, achieving proton beam collimation has typically relied on complex and expensive target fabrication or precise control of auxiliary laser pulses, which poses significant limitations for high-repetition applications. Here, we demonstrate an all-optical method for collimated proton acceleration using a single femtosecond Laguerre-Gaussian (LG) laser with an intensity exceeding 1020 W/cm2 irradiating a simple planar target. Compared to conventional Gaussian laser-driven schemes, the maximum proton energy is enhanced by 60% (reaching 35 MeV) and beam divergence is much reduced. Particle-in-cell simulations reveal that a plasma jet is initially focused by the hollow electric sheath field of the LG laser, and then electrons in the jet are further collimated by self-generated magnetic fields. This process amplifies the charge-separation electric field between electrons and ions, leading to increased proton energy in the longitudinal direction and improved collimation in the transverse direction. This single-LG-laser-driven collimation mechanism offers a promising pathway for high-repetition, high-quality proton beam generation, with broad potential applications including proton therapy and fast ignition in inertial confinement fusion. |
| 语种 | 英语 |
| DOI | arXiv:2501.12683 |
| 相关网址 | 查看原文 |
| 出处 | Arxiv |
| 收录类别 | PPRN.PPRN |
| WOS记录号 | PPRN:120890581 |
| WOS类目 | Physics, Fluids& Plasmas |
| 文献类型 | 预印本 |
| 条目标识符 | https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/503592 |
| 专题 | 物质科学与技术学院 物质科学与技术学院_博士生 |
| 作者单位 | 1.Chinese Acad Sci CAS, State Key Lab High Field Laser Phys, Shanghai 201800, Peoples R China 2.Chinese Acad Sci CAS, Shanghai Inst Opt & Fine Mech SIOM, 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 5.Rutherford Appleton Lab, Oxford OX11 0QX, Oxon, England |
| 推荐引用方式 GB/T 7714 | Wang, Wenpeng,Sun, Xinyue,Sun, Fengyu,et al. Enhanced Proton Acceleration via Petawatt Laguerre-Gaussian Lasers. 2025. |
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