Improving proton acceleration with circularly polarized intense laser pulse by radial confinement with heavy ions

被引:2
|
作者
Huang, L. G. [1 ]
Lei, A. L. [1 ,2 ]
Bin, J. H. [3 ,4 ]
Bai, Y. [1 ]
Yu, Wei [1 ]
Yu, M. Y. [5 ]
Cowan, T. E. [2 ]
机构
[1] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Shanghai 201800, Peoples R China
[2] Forschungszentrum Dresden Rossendorf, Inst Radiat Phys, D-01328 Dresden, Germany
[3] Max Planck Inst Quantum Opt, D-85748 Garching, Germany
[4] Univ Munich, Dept Phys, D-85748 Garching, Germany
[5] Zhejiang Univ, Inst Fus Theory & Simulat, Hangzhou 310027, Peoples R China
关键词
carbon; hydrogen; plasma confinement; plasma density; plasma light propagation; plasma simulation; PETAWATT-LASER; BEAMS; PLASMA;
D O I
10.1063/1.3302536
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
Energetic proton acceleration from interaction of intense short circularly polarized laser pulse with a sandwich target is investigated using two-dimensional particle-in-cell simulation. The sandwich target consists of a hydrogen-plasma layer surrounded by carbon-plasma layers. It is found that the transverse electric fields generated at the plasma layer interfaces efficiently confine the longitudinally accelerated protons to within the hydrogen-plasma layer such that they are collimated and have smaller energy spread compared with a pure proton layer target. The proton energy spectrum can be controlled by adjusting the target parameters, in particular the width of the hydrogen-plasma layer and the density of the carbon-plasma layer.
引用
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页数:4
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