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Generation of High-energy Electron-positron Beams in the Collision of a Laser-accelerated Electron Beam and a Multi-petawatt Laser by Lobet, Mathieu; Davoine, Xavier; d'Humières, Emmanuel; Gremillet, Laurent is a scholarly article available to read on EtoBox.

What is Generation of High-energy Electron-positron Beams in the Collision of a Laser-accelerated Electron Beam and a Multi-petawatt Laser about?

Generation of antimatter via the multiphoton Breit-Wheeler process in an all-optical scheme will be made possible on forthcoming high-power laser facilities through the collision of wakefield-accelerated GeV electrons with a counter-propagating laser pulse with $10^{22}$-$10^{23}$ $\mathrm{Wcm}^{-2}$ peak intensity. By means of integrated 3D particle-in-cell simulations, we show that the production of positron beams with 0.1-1 nC total charge, 100-400 MeV mean energy and 0.01-0.1 rad divergence is within the reach of soon-to-be-available laser systems. The variations of the positron beam's properties with respect to the laser parameters are also examined.

Author

Lobet, Mathieu; Davoine, Xavier; d'Humières, Emmanuel; Gremillet, Laurent

Published

2015

Language

EN