Relativistic magnetic reconnection driven by a laser interacting with a micro-scale plasma slab

Longqing Yi (), Baifei Shen, Alexander Pukhov and Tünde Fülöp
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Longqing Yi: Chalmers University of Technology
Baifei Shen: Shanghai Normal University
Alexander Pukhov: Heinrich-Heine-Universität Düsseldorf
Tünde Fülöp: Chalmers University of Technology

Nature Communications, 2018, vol. 9, issue 1, 1-7

Abstract: Abstract Magnetic reconnection (MR) is a fundamental plasma process associated with conversion of the magnetic field energy into kinetic plasma energy, which is invoked to explain many non-thermal signatures in astrophysical events. Here we demonstrate that ultrafast relativistic MR in a magnetically dominated regime can be triggered by a readily available (TW-mJ-class) laser interacting with a micro-scale plasma slab. Three-dimensional (3D) particle-in-cell (PIC) simulations show that when the electrons beams excited on both sides of the slab approach the end of the plasma, MR occurs and it gives rise to efficient energy dissipation that leads to the emission of relativistic electron jets with cut-off energy ~12 MeV. The proposed scenario allows for accessing an unprecedented regime of MR in the laboratory, and may lead to experimental studies that can provide insight into open questions such as reconnection rate and particle acceleration in relativistic MR.

Date: 2018
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DOI: 10.1038/s41467-018-04065-3

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