Proton Beam Generated by Multi-Lasers Interaction with Rear-Holed Target  

作　　者：杨鹏 范大鹏 李玉晓 

机构地区：[1]School of Physics and Engineering, Zhengzhou University, Zhengzhou 450001, China

出　　处：《Communications in Theoretical Physics》2017年第3期322-326,共5页理论物理通讯（英文版）

摘　　要：Multi-lasers are proposed to enhance the proton acceleration in laser plasma interaction. A rear-holed target is illuminated by three lasers from different directions. The scheme is demonstrated by two-dimensional particlein-cell simulations. The electron cloud shape is controlled well and the electron density is improved significantly. The electrons accelerated by the three lasers induce an enhanced target normal sheath acceleration(TNSA) which suppresses the proton beam divergence and improves the maximum proton energy. The maximum proton energy is 22.9 Me V, which increased significantly than that of a single-laser target interaction. Meanwhile, the average divergence angle(22.3?) is reduced. The dependence of the proton beam on the length of sidewall is investigated in detail and the optimal length is obtained.

关 键 词：PIC simulation proton acceleration rear-holed target multi-lasers 

分 类 号：TN249[电子电信—物理电子学]