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

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 elect...

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Bibliographic Details
Published in:Communications in theoretical physics 2017-03, Vol.67 (3), p.322-326
Main Author: 杨鹏 范大鹏 李玉晓
Format: Article
Language:English
Subjects:
multi-lasers
PIC simulation
proton acceleration
rear-holed target
形状控制
最佳长度
最大能量
模拟演示
激光器
激光照射
激光等离子体相互作用
质子束
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Summary: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.
ISSN:0253-6102
DOI:10.1088/0253-6102/67/3/322