Collisionless shock generation in high-speed counterstreaming plasma flows by a high-power laser

被引：49

作者：

Morita, T. ^{[1
]}

Sakawa, Y. ^{[2
]}

Kuramitsu, Y. ^{[2
]}

Dono, S. ^{[3
]}

Aoki, H. ^{[1
]}

Tanji, H. ^{[3
]}

Kato, T. N. ^{[2
]}

Li, Y. T. ^{[4
]}

Zhang, Y. ^{[4
]}

Liu, X. ^{[4
]}

Zhong, J. Y. ^{[5
]}

Takabe, H. ^{[1
,2
]}

Zhang, J. ^{[6
]}

机构：

[1] Osaka Univ, Grad Sch Sci, Osaka 5600043, Japan

[2] Osaka Univ, Inst Laser Engn, Suita, Osaka 5650871, Japan

[3] Osaka Univ, Grad Sch Engn, Suita, Osaka 5650871, Japan

[4] Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100190, Peoples R China

[5] Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China

[6] Shanghai Jiao Tong Univ, Shanghai 200240, Peoples R China

来源：

PHYSICS OF PLASMAS | 2010年 / 17卷 / 12期

关键词：

SUPERNOVA REMNANT; PARTICLE EVENTS; ACCELERATION; WAVES; SIMULATION;

D O I：

10.1063/1.3524269

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 experimental demonstration of the formation of a strong electrostatic (ES) collisionless shock has been carried out with high-speed counterstreaming plasmas, produced by a high-power laser irradiation, without external magnetic field. The nearly four times density jump observed in the experiment shows a high Mach-number shock. This large density jump is attributed to the compression of the downstream plasma by momentum transfer by ion reflection of the upstream plasma. Particle-in-cell (PIC) simulation shows the production of a collisionless high Mach-number ES shock with counterstreaming interaction of two plasma slabs with different temperatures and densities, as pointed out by Sorasio et al. [Phys. Rev. Lett. 96, 045005 (2006)]. It is speculated that the shock discontinuity is balanced with the momentum of incoming and reflected ions and the predominant pressure of the electrons in the downstream with PIC simulation. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3524269]

引用

页数：6

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