Collisionless shockwaves formed by counter-streaming laser-produced plasmas

Liu, X.; Li, Y. T.; Zhang, Y.; Zhong, Jun; Zheng, W. D.; Dong, Qinglin; Chen, Min; Zhao, Gang; Sakawa, Y.; Morita, T.; Kuramitsu, Yasuhiro; Kato, T.; Chen, L. M.; Lu, Xiaoming; Ma, J. L.; Wang, Weimin; Sheng, Zheng-Ming; Takabe, H.; Rhee, Yong Joo; Ding, Yongkun; Jiang, Shaoen; Liu, S. Y.; Zhu, Jingwei; Zhang, Ji Ping

doi:10.1088/1367-2630/13/9/093001

Cited by 36 publications

(22 citation statements)

References 28 publications

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“…Our collaboration has been exploring collisionless shock formation using high velocity laser-produced plasma flows. Such flows, which have been studied experimentally [17][18][19][20][21][22][23][24][25][26][27][28][29] and theoretically 14,19,[30][31][32][33][34] for a number of years, are formed when a laser heats the electrons in a target. The cloud of these electrons expands, dragging ions along, and then cools adiabatically.…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2013

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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. V C 2013 AIP Publishing LLC.

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Section: Introductionmentioning

confidence: 99%

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

et al. 2013

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“…This instability can produce shocks, as was first discussed by Forslund & Shonk (1970) and first simulated for relativistic plasmas by Silva et al (2004). Some experiments may have observed effects of this process (Bell et al 1988;Morita et al 2010;Kuramitsu et al 2011;Liu et al 2011). However, this process is limited to fairly small Mach numbers and simulations; Kato & Takabe (2010) show that such shocks may dissipate with time in consequence of their nonlinear saturation dynamics.…”

Section: Introductionmentioning

confidence: 86%

Design Considerations for Unmagnetized Collisionless-Shock Measurements in Homologous Flows

Drake

Gregori

2012

ApJ

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The subject of this paper is the design of practical laser experiments that can produce collisionless shocks mediated by the Weibel instability. Such shocks may be important in a wide range of astrophysical systems. Three issues are considered. The first issue is the implications of the fact that such experiments will produce expanding flows that are approximately homologous. As a result, both the velocity and the density of the interpenetrating plasma streams will be time dependent. The second issue is the implications of the linear theory of the Weibel instability. For the experiments, the instability is in a regime where standard simplifications do not apply. It appears feasible but non-trivial to obtain adequate growth. The third issue is collisionality. The need to keep resistive magnetic-field dissipation small enough implies that the plasmas should not be allowed to cool substantially.

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“…It is supposed that many astronomical and astrophysical shock waves are collisionless. In their investigation, the collisionless shockwaves were generated by two counterstreaming laser-produced plasmas (Liu et al 2011). Numerical simulations indicate that the shockwaves are excited by electrostatic instability.…”

Section: High-energy Density Physics and Laboratory Astrophysics Drivmentioning

confidence: 99%

Summary of laser plasma physics sessions at the first AAPPS-DPP conference

Sheng

2018

Rev. Mod. Plasma Phys.

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The presentations on laser plasma physics at the first AAPPS-DPP conference covered topics of inertial confined fusion physics and technologies, laboratory astrophysics and high-energy density physics, laser plasma-based particle acceleration (electrons and ions) and radiation, fundamental laser plasma physics, and related high-power laser system development. This report summarizes the major advances in these topics presented at the plenary and oral sessions.

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Collisionless shockwaves formed by counter-streaming laser-produced plasmas

Cited by 36 publications

References 28 publications

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

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

Design Considerations for Unmagnetized Collisionless-Shock Measurements in Homologous Flows

Summary of laser plasma physics sessions at the first AAPPS-DPP conference

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