Laser-Triggered Proton Acceleration From Micro-Structured thin Targets

被引：10
作者：
Brantov, A. [1 ,2 ]
Bychenkov, V. Yu. [1 ,2 ]
机构：
[1] Russian Acad Sci, PN Lebedev Phys Inst, Moscow 119991, Russia
[2] ROSATOM, NL Dukhov All Russia Res Inst Automat, Moscow 127055, Russia
来源：
CONTRIBUTIONS TO PLASMA PHYSICS | 2013年 / 53卷 / 10期
关键词：
Proton acceleration; 3D-PIC simulation; laser-plasma interaction; PULSES;
D O I：
10.1002/ctpp.201310046
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：
By using relativistic massively parallel PIC code MANDOR, which features arbitrary target design including 3D micro-structuring, a study of ion acceleration in short laser pulse interaction with different thin targets has been performed. Based on 3D simulation results it has been shown that micro-structures on the front surface of thin plane targets increase a number and energy of hot electrons in comparison with that for the case of pure plain foils of optimal thickness. As a result, the energy of accelerated ions also increases up to 50%. However, the efficiency of ion acceleration from structured target reduces with laser pulse intensity increase, so that for laser pulses of ultra-relativistic intensity a positive role of surface micro-structuring diminishes. We have also studied to which extent a sub-ps imperfection of the laser pulse shape, which smoothes the surface micro-structures suppresses high-energy ion generation. ((c) 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)
引用
收藏
页码：731 / 735
页数：5
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