Abstract

Recent developments of high-power laser systems have enabled the production of high energy proton and electron beams. Here, we studied the laser-driven particle acceleration at near-critical density plasma by employing a 100 TW ultra-fast intense laser pulse through two-dimensional (2D) particle-in-cell (PIC) simulations. The strong magnetic field production and the energy of accelerated particles is numerically demonstrated and shows that there is a dependence on laser focusing position and electron number density. 2D PIC simulation results show that by using 100 TW table-top laser systems, it is possible to produce 120 MeV protons and 250 MeV electrons with a small angular distribution.

Graphic abstract

中文翻译：

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近临界密度等离子体的激光驱动粒子加速

摘要

高功率激光系统的最新发展使高能质子和电子束的产生成为可能。在这里，我们通过二维 (2D) 细胞内粒子 (PIC) 模拟采用 100 TW 超快强激光脉冲研究了近临界密度等离子体中激光驱动的粒子加速。强磁场产生和加速粒子的能量被数值证明，并表明存在激光聚焦位置和电子数密度的依赖性。2D PIC 仿真结果表明，通过使用 100 TW 台式激光系统，可以产生 120 MeV 质子和 250 MeV 电子，并且角度分布很小。

图形摘要