Brilliant GeV gamma-ray flash from inverse Compton scattering in the QED regime

Abstract

An all-optical scheme is proposed for studying a laser-plasma based\nincoherent photon emission from inverse Compton scattering in quantum\nelectrodynamic (QED) regime. A theoretical model is presented to explain the\ncoupling effect among radiation reaction trapping, self-generated magnetic\nfield and spiral attractor in phase space, which guarantees the energy and\nangular momentum (AM) transformation from electromagnetic fields to particles.\nTaking advantage of a prospective $\\sim$10$^{23}$W/cm$^{2}$ laser facility, 3D\nParticle-in-cell (PIC) simulations manifest the present gamma-ray flash with an\nunprecedented power of multi-petawatt (PW) and brightness of\n1.7$\\times$10$^{23}$photons/s/mm$^2$/mrad$^2$/0.1$\\%$bandwidth (at 1GeV). These\nresults bode well for new research direction in particle physics and laboratory\nastrophysics while exploring laser plasma interaction.\n