- Letter
- Open Access
Formation of collisionless shocks driven by strongly magnetized relativistic electrons in the laboratory
Phys. Rev. Research 6, L012016 – Published 18 January, 2024
DOI: https://doi.org/10.1103/PhysRevResearch.6.L012016
Abstract
In experiments performed with the OMEGA EP laser system, proton deflectometry captured magnetic field dynamics consistent with collisionless shock formation driven by strongly magnetized relativistic electrons. During laser-foil interactions, shocks can form as relativistic electrons and strong surface magnetic fields generated by a short-pulse laser impinge on a cooler plasma produced by a longer-pulse laser. Three-dimensional particle-in-cell simulations reproduce the magnetic draping and fast formation speeds measured in the experiment and reveal that this relativistic-electron-driven shock forms at an interface that is unstable to shear and streaming instabilities. The simulation results provide insight into the microphysics that may influence high-energy shocks observed in extreme astrophysical environments.
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