Laser-driven plasma jets propagating in an ambient gas studied with optical and proton diagnostics

被引：17
|
作者：
Gregory, C. D. [1 ]
Loupias, B. [1 ]
Waugh, J. [2 ]
Dono, S. [4 ]
Bouquet, S. [3 ,5 ]
Falize, E. [3 ,5 ]
Kuramitsu, Y. [4 ]
Michaut, C. [3 ]
Nazarov, W. [6 ]
Pikuz, S. A., Jr. [7 ]
Sakawa, Y. [4 ]
Woolsey, N. C. [2 ]
Koenig, M. [1 ]
机构：
[1] Univ Paris 06, Ecole Polytech, CEA, Lab Utilisat Lasers Intenses,CNRS,UMR7605, F-91128 Palaiseau, France
[2] Univ York, Dept Phys, York YO10 5DD, N Yorkshire, England
[3] Univ Paris Diderot, CNRS, Observ Paris, LUTH, F-92190 Meudon, France
[4] Osaka Univ, Inst Laser Engn, Suita, Osaka 5650871, Japan
[5] CEA DAM DIF, F-91297 Arpajon, France
[6] Univ St Andrews, Sch Chem, St Andrews KY16 9ST, Fife, Scotland
[7] RAS, Joint Inst High Temp, Moscow 125412, Russia
来源：
PHYSICS OF PLASMAS | 2010年 / 17卷 / 05期
关键词：
argon; plasma diagnostics; plasma jets; plasma production by laser; plasma shock waves; LABORATORY ASTROPHYSICS; SHOCK; SIMULATION; RELEVANT; OUTFLOWS;
D O I：
10.1063/1.3431094
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：
The results of an experiment to propagate laser-generated plasma jets into an ambient medium are presented. The jets are generated via laser irradiation of a foam-filled cone target, the results and characterization of which have been reported previously [Loupias , Phys. Rev. Lett. 99, 265001 (2007)] for propagation in vacuum. The introduction of an ambient medium of argon at varying density is seen to result in the formation of a shock wave, and the shock front displays perturbations that appear to grow with time. The system is diagnosed with the aid of proton radiography, imaging the perturbed structure in the dense parts of the shock with high resolution. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3431094]
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页数：6
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