Time-Resolved Characterization of the Formation of a Collisionless Shock

被引:57
作者
Ahmed, H. [1 ]
Dieckmann, M. E. [1 ]
Romagnani, L. [2 ]
Doria, D. [1 ]
Sarri, G. [1 ]
Cerchez, M. [3 ]
Ianni, E. [1 ,4 ]
Kourakis, I. [1 ]
Giesecke, A. L. [3 ]
Notley, M. [5 ]
Prasad, R. [1 ]
Quinn, K. [1 ]
Willi, O. [3 ]
Borghesi, M. [1 ,6 ]
机构
[1] Queens Univ Belfast, Sch Math & Phys, Ctr Plasma Phys, Belfast BT7 1NN, Antrim, North Ireland
[2] UPMC, CNRS, CEA, LULI,Ecole Polytech, F-91128 Palaiseau, France
[3] Univ Dusseldorf, Inst Laser & Plasma Phys, D-40225 Dusseldorf, Germany
[4] Univ Pisa, Dipartimento Fis, I-56127 Pisa, Italy
[5] Rutherford Appleton Lab, Cent Laser Facil, Chilton OX11 0QX, Oxon, England
[6] ASCR, Inst Phys, ELI Beamlines Project, Prague 18221, Czech Republic
基金
英国工程与自然科学研究理事会;
关键词
COSMIC-RAY ACCELERATION; LASER-PRODUCED-PLASMA; SUPERNOVA REMNANT; TEMPERATURE; ELECTRONS; WAVES; IONS;
D O I
10.1103/PhysRevLett.110.205001
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We report on the temporally and spatially resolved detection of the precursory stages that lead to the formation of an unmagnetized, supercritical collisionless shock in a laser-driven laboratory experiment. The measured evolution of the electrostatic potential associated with the shock unveils the transition from a current free double layer into a symmetric shock structure, stabilized by ion reflection at the shock front. Supported by a matching particle-in-cell simulation and theoretical considerations, we suggest that this process is analogous to ion reflection at supercritical collisionless shocks in supernova remnants.
引用
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页数:5
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