Journal ArticleDOI
Accelerated ions from pulsed-power-driven fast plasma flow in perpendicular magnetic field
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TLDR
In this article, the behavior of fast plasma flow in a perpendicular magnetic field by a laboratory-scale experiment using a pulsed-power discharge was investigated, where the velocity of the plasma flow generated by a tapered cone plasma focus device was about 30 km/s, and the magnetic Reynolds number was estimated to be 8.8.Abstract:
To understand the interaction between fast plasma flow and perpendicular magnetic field, we have investigated the behavior of a one-dimensional fast plasma flow in a perpendicular magnetic field by a laboratory-scale experiment using a pulsed-power discharge. The velocity of the plasma flow generated by a tapered cone plasma focus device is about 30 km/s, and the magnetic Reynolds number is estimated to be 8.8. After flow through the perpendicular magnetic field, the accelerated ions are measured by an ion collector. To clarify the behavior of the accelerated ions and the electromagnetic fields, numerical simulations based on an electromagnetic hybrid particle-in-cell method have been carried out. The results show that the behavior of the accelerated ions corresponds qualitatively to the experimental results. Faster ions in the plasma flow are accelerated by the induced electromagnetic fields modulated with the plasma flow.read more
Citations
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Exploring astrophysics-relevant magnetohydrodynamics with pulsed-power laboratory facilities
TL;DR: In this paper, a review summarizes the progress made during the last decade and is designed to help readers identify and, perhaps, implement new experiments in this growing research area, and describes techniques used for generation and characterization of the flows.
Journal ArticleDOI
Particle acceleration mechanism due to interaction between one-dimensional fast plasma flow and perpendicular magnetic field
Taichi Takezaki,Keita Kakinuma,Yoshiki Shikuma,Kazumasa Takahashi,Toru Sasaki,Takashi Kikuchi,Nob. Harada +6 more
TL;DR: In this paper, numerically investigated the behavior of one-dimensional fast plasma flow in a perpendicular magnetic field for understanding the particle acceleration mechanisms of collisionless shocks in the non-relativistic region.
Journal ArticleDOI
Measurement of Ion Energy Distribution Function of Fast Plasma Flow Driven by Plasma Focus Device Using Retarding Field Energy Analyzer
TL;DR: In this paper , a compact plasma focus (CPF) was proposed to generate collisionless plasma by using pulsed-power discharge, and the IEDF of the plasma flow was measured using a retarding field energy analyzer (RFA).
Journal ArticleDOI
Strong collisionless coupling between an unmagnetized driver plasma and a magnetized background plasma
F. Cruz,Derek Schaeffer,L. Silva +2 more
TL;DR: In this paper , the authors developed a semi-analytical model of the parameters that characterize the strong collisionless coupling between an unmagnetized driver plasma and a uniformly and perpendicularly magnetized background plasma.
References
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Journal ArticleDOI
The acceleration of cosmic rays in shock fronts – I
Journal ArticleDOI
Particle Acceleration by Astrophysical Shocks
TL;DR: In this article, a new mechanism is proposed for acceleration of a power-law distribution of cosmic rays with approximately the observed slope, where high-energy particles in the vicinity of a shock are scattered by Alfven waves carried by the converging fluid flow leading to a first-order acceleration process in which the escape time is automatically comparable to the acceleration time.
Journal ArticleDOI
The structure of perpendicular bow shocks
TL;DR: In this article, a hybrid simulation model with kinetic ions, massless fluid electrons, and phenomenological resistivity is used to investigate the perpendicular configuration of the bow shocks of the earth and other planets.
Journal ArticleDOI
Similarity Criteria for the Laboratory Simulation of Supernova Hydrodynamics
D. D. Ryutov,R. P. Drake,R. P. Drake,Jave Kane,Edison Liang,Edison Liang,Bruce Remington,W. M. Wood-Vasey,W. M. Wood-Vasey +8 more
TL;DR: In this paper, the conditions for the applicability of the Euler equations are formulated, based on the analysis of localization, heat conduction, viscosity, and radiation.
Journal ArticleDOI
Nonthermal Electrons at High Mach Number Shocks: Electron Shock Surfing Acceleration
Masahiro Hoshino,N. Shimada +1 more
TL;DR: In this article, the suprathermal electron acceleration mechanism in a perpendicular magnetosonic shock wave in a high Mach number regime was studied by using a particle-in-cell simulation, and it was shown that the electrons are likely to be trapped by solitary waves and during the trapping phase they can be effectively accelerated by the shock motional/convection electric field.