Visualizing electromagnetic fields in laser-produced counter-streaming plasma experiments for collisionless shock laboratory astrophysics

被引：36

作者：

Kugland, N. L. ^{[1
]}

Ross, J. S. ^{[1
]}

Chang, P. -Y. ^{[2
]}

Drake, R. P. ^{[3
]}

Fiksel, G. ^{[2
]}

Froula, D. H. ^{[2
]}

Glenzer, S. H. ^{[1
]}

Gregori, G. ^{[4
]}

Grosskopf, M. ^{[3
]}

Huntington, C. ^{[1
]}

Koenig, M. ^{[5
]}

Kuramitsu, Y. ^{[6
]}

Kuranz, C. ^{[3
]}

Levy, M. C. ^{[1
,7
]}

Liang, E. ^{[7
]}

Martinez, D. ^{[1
]}

Meinecke, J. ^{[4
]}

Miniati, F. ^{[8
]}

Morita, T. ^{[6
]}

Pelka, A. ^{[5
]}

Plechaty, C. ^{[1
]}

Presura, R. ^{[9
]}

Ravasio, A. ^{[5
]}

Remington, B. A. ^{[1
]}

Reville, B. ^{[4
]}

Ryutov, D. D. ^{[1
]}

Sakawa, Y. ^{[6
]}

Spitkovsky, A. ^{[10
]}

Takabe, H. ^{[6
]}

Park, H. -S. ^{[1
]}

机构：

[1] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA

[2] Univ Rochester, Laser Energet Lab, Rochester, NY 14636 USA

[3] Univ Michigan, Dept Atmospher Ocean & Space Sci, Ann Arbor, MI 48109 USA

[4] Univ Oxford, Dept Phys, Oxford OX1 3PU, England

[5] Univ Paris 06, Ecole Polytech, LULI, F-91128 Palaiseau, France

[6] Osaka Univ, Inst Laser Energet, Osaka 5650871, Japan

[7] Rice Univ, Houston, TX 77251 USA

[8] ETH, Dept Phys, CH-8093 Zurich, Switzerland

[9] Univ Nevada, Reno, NV 89557 USA

[10] Princeton Univ, Princeton, NJ 08544 USA

来源：

PHYSICS OF PLASMAS | 2013年 / 20卷 / 05期

基金：

日本学术振兴会; 欧洲研究理事会; 美国国家科学基金会;

关键词：

MAGNETIC-FIELDS; ACCELERATION; SIMULATION; GENERATION; CRITERIA; DESIGN;

D O I：

10.1063/1.4804548

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：

Collisionless shocks are often observed in fast-moving astrophysical plasmas, formed by non-classical viscosity that is believed to originate from collective electromagnetic fields driven by kinetic plasma instabilities. However, the development of small-scale plasma processes into large-scale structures, such as a collisionless shock, is not well understood. It is also unknown to what extent collisionless shocks contain macroscopic fields with a long coherence length. For these reasons, it is valuable to explore collisionless shock formation, including the growth and self-organization of fields, in laboratory plasmas. The experimental results presented here show at a glance with proton imaging how macroscopic fields can emerge from a system of supersonic counter-streaming plasmas produced at the OMEGA EP laser. Interpretation of these results, plans for additional measurements, and the difficulty of achieving truly collisionless conditions are discussed. Future experiments at the National Ignition Facility are expected to create fully formed collisionless shocks in plasmas with no pre-imposed magnetic field. (C) 2013 AIP Publishing LLC.

引用

页数：14

共 21 条

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