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

T. Morita; Y. Sakawa; Y. Kuramitsu; S. Dono; H. Aoki; H. Tanji; T. N. Kato; Y. T. Li; Y. Zhang; X. Liu; J. Y. Zhong; H. Takabe; J. Zhang

doi:10.1063/1.3524269

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

T. Morita, Y. Sakawa, Y. Kuramitsu, S. Dono, H. Aoki, H. Tanji, T. N. Kato, Y. T. Li, Y. Zhang, X. Liu, J. Y. Zhong, H. Takabe, J. Zhang

Research output: Contribution to journal › Article › peer-review

47 Citations (Scopus)

Abstract

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 [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.

Original language	English
Article number	122702
Journal	Physics of Plasmas
Volume	17
Issue number	12
DOIs	https://doi.org/10.1063/1.3524269
Publication status	Published - Dec 2010
Externally published	Yes

All Science Journal Classification (ASJC) codes

Condensed Matter Physics

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10.1063/1.3524269

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title = "Collisionless shock generation in high-speed counterstreaming plasma flows by a high-power laser",

abstract = "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 [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.",

author = "T. Morita and Y. Sakawa and Y. Kuramitsu and S. Dono and H. Aoki and H. Tanji and Kato, {T. N.} and Li, {Y. T.} and Y. Zhang and X. Liu and Zhong, {J. Y.} and H. Takabe and J. Zhang",

note = "Funding Information: This work is supported by the National Basic Research Program of China (973 Program) (Grant No. 2007CB815100) and NIFS/NINS under the project of Formation of International Network for Scientific Collaborations. ",

year = "2010",

month = dec,

doi = "10.1063/1.3524269",

language = "English",

volume = "17",

journal = "Physics of Plasmas",

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T1 - Collisionless shock generation in high-speed counterstreaming plasma flows by a high-power laser

AU - Morita, T.

AU - Sakawa, Y.

AU - Kuramitsu, Y.

AU - Dono, S.

AU - Aoki, H.

AU - Tanji, H.

AU - Kato, T. N.

AU - Li, Y. T.

AU - Zhang, Y.

AU - Liu, X.

AU - Zhong, J. Y.

AU - Takabe, H.

AU - Zhang, J.

N1 - Funding Information: This work is supported by the National Basic Research Program of China (973 Program) (Grant No. 2007CB815100) and NIFS/NINS under the project of Formation of International Network for Scientific Collaborations.

PY - 2010/12

Y1 - 2010/12

N2 - 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 [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.

AB - 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 [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.

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

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