Time Evolution of Collisionless Shock in Counterstreaming Laser-Produced Plasmas

被引:125
作者
Kuramitsu, Y. [1 ]
Sakawa, Y. [1 ]
Morita, T. [2 ]
Gregory, C. D. [3 ]
Waugh, J. N. [4 ]
Dono, S. [5 ]
Aoki, H. [2 ]
Tanji, H. [5 ]
Koenig, M. [3 ]
Woolsey, N. [4 ]
Takabe, H. [1 ]
机构
[1] Osaka Univ, Inst Laser Engn, Suita, Osaka 5650871, Japan
[2] Osaka Univ, Grad Sch Sci, Osaka 5600043, Japan
[3] Univ Paris 06, Ecole Polytech, Lab Utilisat Lasers Intenses, CEA,CNRS,UMR 7605, F-91128 Palaiseau, France
[4] Univ York, Dept Phys, York YO10 5DD, N Yorkshire, England
[5] Osaka Univ, Grad Sch Engn, Suita, Osaka 5650871, Japan
关键词
D O I
10.1103/PhysRevLett.106.175002
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We investigated the time evolution of a strong collisionless shock in counterstreaming plasmas produced using a high-power laser pulse. The counterstreaming plasmas were generated by irradiating a CH double-plane target with the laser. In self-emission streaked optical pyrometry data, steepening of the self-emission profile as the two-plasma interaction evolved indicated shock formation. The shock thickness was less than the mean free path of the counterstreaming ions. Two-dimensional snapshots of the self-emission and shadowgrams also showed very thin shock structures. The Mach numbers estimated from the flow velocity and the brightness temperatures are very high.
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页数:4
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