Electromagnetic field generation in the downstream of electrostatic shocks due to electron trapping

Abstract

A new magnetic field generation mechanism in electrostatic shocks is found, which can produce fields with magnetic energy density as high as 0.01 of the kinetic energy density of the flows on time scales $\stackrel{~}{}10^4{\omega }_{pe}^{-1}$. Electron trapping during the shock formation process creates a strong temperature anisotropy in the distribution function, giving rise to the pure Weibel instability. The generated magnetic field is well-confined to the downstream region of the electrostatic shock. The shock formation process is not modified and the features of the shock front responsible for ion acceleration, which are currently probed in laser-plasma laboratory experiments, are maintained. However, such a strong magnetic field determines the particle trajectories downstream and has the potential to modify the signatures of the collisionless shock.

References in corpus (12)

• Particle acceleration in relativistic collisionless shocks: Fermi process at last?
• Laser-driven shock acceleration of monoenergetic ion beams
• One-to-one direct modeling of experiments and astrophysical scenarios: pushing the envelope on kinetic plasma simulations
• Filamentation instability of counter-streaming laser-driven plasmas
• Ion dynamics and acceleration in relativistic shocks
• Weibel, Two-Stream, Filamentation, Oblique, Bell, Buneman... which one grows faster ?
• Weibel-instability-mediated collisionless shocks in laboratory with ultraintense lasers
• Accelerating Protons to Therapeutic Energies with Ultra-Intense Ultra-Clean and Ultra-Short Laser Pulses
• Ion acceleration from laser-driven electrostatic shocks
• Very High Mach Number Electrostatic Shocks in Collisionless Plasmas
• Electrostatic and electromagnetic instabilities associated with electrostatic shocks: two-dimensional particle-in-cell simulation
• Relativistic generalization of formation and ion reflection conditions in electrostatic shocks

Cited by in corpus (7)

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• Collisional behaviors of astrophysical collisionless plasmas
• Magnetogenesis by Wave-Driven Momentum Exchange
• Electron Weibel instability and~quasi-magnetostatic structures in~an~expanding collisionless plasma
• Magnetized Current Filaments as a Source of Circularly Polarized Light