Laser-driven collisionless shock acceleration of protons from gas jets tailored by one or two nanosecond beams

被引：8
|
作者：
Bonvalet, J. [1 ]
Loiseau, P. [2 ,3 ]
Marques, J-R [4 ]
Atukpor, E. [5 ]
D'Humieres, E. [1 ]
Domange, J. [5 ]
Forestier-Colleoni, P. [4 ]
Hannachi, F. [5 ]
Lancia, L. [4 ]
Raffestin, D. [1 ]
Tarisien, M. [5 ]
Tikhonchuk, V [1 ,6 ]
Nicolai, Ph [1 ]
机构：
[1] Univ Bordeaux, UMR5107, CELIA, CNRS,CEA, Talence, France
[2] CEA, DAM, DIF, F-91297 Arpajon, France
[3] Univ Paris Saclay, LMCE, CEA, F-91680 Bruyeres Le Chatel, France
[4] Sorbonne Univ, Inst Polytech Paris, CEA, Ecole Polytech,LULI,CNRS, F-91128 Palaiseau, France
[5] Univ Bordeaux, CNRS, IN2P3, CENBG, F-33175 Gradignan, France
[6] Czech Acad Sci, ELI Beamlines Ctr, Inst Phys, Za Radnici 835, Dolni Brezany 25241, Czech Republic
来源：
PHYSICS OF PLASMAS | 2021年 / 28卷 / 11期
关键词：
Acceleration - Shock waves - Plasma simulation - Laser pulses;
D O I：
10.1063/5.0062503
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：
It was proposed recently that laser-ion acceleration in gas jets may be significantly improved if each side of a gas jet target is tailored by an auxiliary nanosecond laser pulse [Marques et al., Phys. Plasmas 28, 023103 (2021)]. In the present study, the proton acceleration by electrostatic shock in these one- or two-side tailored plasmas is investigated using particle-in-cell simulations. It is demonstrated that the formation of a thin plasma layer with a steep density profile and a maximum density of the order of the critical density strongly improves the proton acceleration in the forward direction with a maximum ion energy of tens of MeV with mildly relativistic laser pulses. Proton acceleration up to tens of MeV is predicted using realistic plasma density profiles obtained from tailored gas jet targets compared to a few MeV reported in other publications.</p>
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页数：16
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