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

来源：

PHYSICAL REVIEW LETTERS | 2013年 / 110卷 / 20期

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

页数：5

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