An interaction of laser pulses with extremely high intensity

The interaction of laser pulses with extremely high intensity exceeding 10²⁰ W/cm²  leads to the generation of extremely energetic particles [1] and gamma photons [2], and this interaction is accompanied by new unexpected physical phenomena [3]. The goal of kinetic simulations and analytic models is to acquire a detailed understanding of such new physical phenomena and to optimize any new methods of the generation of secondary sources of energetic particles and radiation. The numerical simulations are focused on the predictions and the preparation of future experiments to be conducted using a 10PW laser at ELI Beamlines.

Description

Setup. (a) Perpendicularly moving electron beam interacts with the laser at the focus and creates new pairs; (b) Some electrons and positrons obtain a momentum component parallel to the laser propagation direction and start getting accelerated; (c) The laser defocuses shutting down the interaction; this leaves the particles with the net energy gain from the laser. (d) A fraction of the accelerated electrons and positrons distributed within the momentum space.