激光驱动离子加速的研究进展及其重要应用综述  

Review of Research Developments and Important Applications of Laser-Driven Ion Acceleration

作　　者：胡艳婷 张昊 邓宏祥 邵福球[1] 余同普 Hu Yanting;Zhang Hao;Deng Hongxiang;Shao Fuqiu;Yu Tongpu(Department of Physics,College of Liberal Arts and Sciences,National University of Defense Technology,Changsha Hunan 410073 China)

机构地区：[1]国防科技大学文理学院物理系,湖南长沙410073

出　　处：《中国激光》2021年第4期106-127,共22页Chinese Journal of Lasers

基　　金：国家重点研发计划(2018YFA0404802);国家自然科学基金(11875319);霍英东青年教育基金(161007);国防科技大学科研计划重点项目(ZK18-02-02);湖南省研究生科研创新项目(CX20190017,CX20200038)。

摘　　要：随着激光技术的不断发展,特别是啁啾脉冲放大技术被提出以来,超强激光脉冲驱动的离子加速研究逐渐吸引了国内外科学家们的广泛关注,在离子能量提升、发散角控制和单能性提高等方面相继取得一系列重要进展。由激光与等离子体相互作用产生的离子束具有能量高、脉宽窄和方向性好等特点,具有许多潜在应用。本文通过回顾激光驱动离子加速的研究历程,对离子加速的主要作用机制、基本理论模型、数值模拟和实验研究等进行详细的阐述,同时对激光驱动离子加速的重要应用进行归纳总结。最后根据当前国内外大型激光装置的发展趋势,对极端光场中的离子加速进行展望。Significance Thanks to the invention of the chirped pulse amplification technique and the Kerr lens mode-locking technique as well as the discovery of the titanium:sapphire laser medium,the current laser systems can provide picosecond or femtosecond laser pulse duration and simultaneously ultrahigh peak power of terawatt to petawatt levels.Recently,the peak power of multipetawatt(as 10 PW)has already been achieved in several laboratories,such as the extreme light infrastructure-nuclear physics and Shanghai superintense ultrafast laser facility.These laboratories have prompted significant progress on laser-plasma interaction.In the past decade,laser-driven ion sources and their applications have been extensively investigated.One of the significant features of laser-driven ion beams compared with conventional ion accelerators is the sufficiently small valid source size(~10μm)and ultrashort duration(picoseconds)at the source of the ion bunch.This is attributed to the increased acceleration gradients of the order of MeV/μm,compared with MeV/m provided by the conventional ones,e.g.,the radio frequency wave-based accelerators.Progress Since the 1990 s,the research on ion acceleration driven by ultraintense laser pulses has attracted significant attention from national and international professionals.Before 2000,the ion energy of several MeV had been achieved in laser-plasma experiments using different targets,such as thick solid foils,gas jets,and submicrometric clusters.However,these ion beams with a wide energy spectrum and large emission angle are unattractive as ion accelerators for many potential applications.In 2000,high-energy proton beams with a peak energy of 58 MeV are obtained in the Lawrence Livermore National Laboratory.The protons are detected at the rear side of the target and emitted as a collimated beam along the target normal direction.Since then,scientists have proposed a new upsurge of high-quality energetic ion beams driven by relativistic laser pulses.Several groups have demonstrated,over a broa

关 键 词：超快光学 光学器件 超强激光 等离子体 离子加速 单能质子束 

分 类 号：O539[理学—等离子体物理] O437[理学—物理]