3D simulation of a dilute ultrarelativistic electron beam propagating through an electron-ion background, showing the magnetic field strength (top) and ion density (bottom), with blue lowest and red highest in both panels.
From the article:
Magnetic Field Amplification by a Nonlinear Electron Streaming InstabilityJ. R. Peterson, S. Glenzer, and F. Fiuza
Phys. Rev. Lett. 126, 215101 (2021)
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