Efficient proton beam generation from a foam-carbon foil target using an intense circularly polarized laser

被引：2
|
作者：
Gao, Lingyuan [1 ]
Wang, Hongyong
Lin, Chen
Zou, Yubin
Yan, Xueqing
机构：
[1] Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China
来源：
PHYSICS OF PLASMAS | 2012年 / 19卷 / 08期
关键词：
PARTICLE-ACCELERATION; PLASMA INTERACTION; FAST IGNITION; PULSES; PROPAGATION;
D O I：
10.1063/1.4747158
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 circularly polarized laser pulse with a foam-carbon foil target is investigated using two-dimensional particle-in-cell simulation. It is found that protons from this target are accelerated to much higher energy in comparison with double-layer targets and simple flat targets. This result can be attributed to an enhancement of energy conversion efficiency from laser to electrons inside foam region. When a large number of energetic electrons are generated from the nearcritical plasma, they transport through the foil and form a strong backside sheath field which accelerates protons more efficiently. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4747158]
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页数：4
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