Modeling the interaction of an ultra-high intensity laser pulse with nano-layered flat-top cone targets for ion acceleration

被引：12
|
作者：
Budriga, O. [1 ]
d'Humieres, E. [2 ]
Ionel, L. E. [1 ]
Martis, M. [1 ,3 ]
Carabas, M. [4 ]
机构：
[1] Natl Inst Laser Plasma & Radiat Phys, Laser Dept, Magurele, Romania
[2] Univ Bordeaux, CNRS, CEA, CELIA, Talence, France
[3] Univ Politehn Bucuresti, Fac Appl Sci, Bucharest, Romania
[4] Univ Politehn Bucuresti, Fac Automat Control & Comp, Bucharest, Romania
来源：
PLASMA PHYSICS AND CONTROLLED FUSION | 2019年 / 61卷 / 08期
关键词：
laser-ion acceleration; ultra-high intensity laser pulse; nano-layered flat-top cone target; radiation pressure acceleration; target normal sheath acceleration; plasma; PROTON-BEAMS; PLASMA;
D O I：
10.1088/1361-6587/ab21f0
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：
We study the interaction of an ultra-high intensity laser pulse with plastic nano-layered flat-top cone targets by performing particle-in-cell simulations. Also, we analyze the spatio-temporal dynamics of the electromagnetic field based on the finite-difference time-domain method in order to isolate the geometric effects which affect the incoming laser-plasma interaction. We consider an ultra-high intensity laser pulse with linear and circular polarization. We have determined the optimum diameter of the nanospheres for a given nano-layer foil thickness for which it can be obtained beams of very energetic protons with low angular divergence. We point out that the protons are accelerated by a hybrid mechanism composed of target normal sheath acceleration and radiation pressure acceleration. This numerical study will allow to prepare and optimize first laser ion acceleration experiments on Extreme Light Infrastructure-Nuclear Physics and other PW laser facilities.
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页数：10
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