Dense monoenergetic proton beams from chirped laser-plasma interaction.
Dense monoenergetic proton beams from chirped laser-plasma interaction.
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DOI：
10.1103/physrevlett.107.185002
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发表时间：
2011-07
影响因子：
8.6
通讯作者：
B. Galow;Y. Salamin;T. Liseykina;Z. Harman;C. Keitel
中科院分区：
文献类型：
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作者：
B. Galow;Y. Salamin;T. Liseykina;Z. Harman;C. Keitel
分别用解析方法和粒子模拟方法研究了频率啁啾激光脉冲与单个质子和氢气靶的相互作用。证明了产生超强（每束10（7）粒子）和相空间准直质子束（能量扩展约1%）的可行性。质子和激光场的相位同步由激光脉冲的适当啁啾保证，允许粒子从强度为10（21）W/cm（2）量级的最先进激光系统获得强子癌症治疗等应用所需的足够动能（约250 MeV）。
Interaction of a frequency-chirped laser pulse with single protons and a hydrogen gas target is studied analytically and by means of particle-in-cell simulations, respectively. The feasibility of generating ultraintense (10(7) particles per bunch) and phase-space collimated beams of protons (energy spread of about 1%) is demonstrated. Phase synchronization of the protons and the laser field, guaranteed by the appropriate chirping of the laser pulse, allows the particles to gain sufficient kinetic energy (around 250 MeV) required for such applications as hadron cancer therapy, from state-of-the-art laser systems of intensities of the order of 10(21) W/cm(2).