Multi-GeV Electron Acceleration in Wakefields Strongly Driven by Oversized Laser Spots

Experiments were performed on laser wakefield acceleration in the highly nonlinear regime. With laser powers P2.5 GeV, in fields exceeding 500 GV m^{-1}, with more than 80 pC of charge at energies E>1 GeV. Three-dimensional particle-in-cell simulations show that using an oversized spot delays inject... View More