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

Longqing Yi (Institutionen för fysik, Subatomär fysik och plasmafysik (Chalmers)) ; B Shen ; A Pukhov ; Tünde Fülöp (Institutionen för fysik, Subatomär fysik och plasmafysik (Chalmers))
59th Annual Meeting of the APS Division of Plasma Physics p. BO6.00014 . (2017)
[Konferensbidrag, övrigt]

Magnetic reconnection (MR) in the relativistic regime is generally thought to be responsible for powering rapid bursts of non-thermal radiation in astrophysical events. It is therefore of significant importance to study how the field energy is transferred to the plasma to power the observed emission. However, due to the difficulty in making direct measurements in astrophysical systems or achieving relativistic MR in laboratory environments, the particle acceleration is usually studied using fully kinetic PIC simulations. Here we present a numerical study of a readily available (TW-mJ-class) laser interacting with a micro-scale plasma slab. The simulations show when the electron beams excited on both sides of the slab approach the end of the plasma structure, ultrafast relativistic MR occurs. As the field topology changes, the explosive release of magnetic energy results in emission of relativistic electron jets with cut-off energy \textasciitilde 12 MeV. The proposed novel scenario can be straightforwardly implemented in experiments, and might significantly improve the understanding of fundamental questions such as field dissipation and particle acceleration in relativistic MR.



Denna post skapades 2017-09-29. Senast ändrad 2017-09-29.
CPL Pubid: 252125

 

Institutioner (Chalmers)

Institutionen för fysik, Subatomär fysik och plasmafysik (Chalmers)

Ämnesområden

Hållbar utveckling
Plasmafysik

Chalmers infrastruktur