Author:
Powell J.,Jolly S. W.,Vallières S.,Payeur S.,Fourmaux S.,Fillion-Gourdeau F.,Lassonde P.,Ibrahim H.,MacLean S.,Légaré F.
Abstract
We generate electrons exceeding 1 MeV by direct acceleration in a low-density gas using longitudinal electric fields of a focused radially-polarized laser. Results depend strongly on the atomic species, explained by simulations that hint at even higher energies.