High brightness multi-MeV photon source driven by a petawatt-scale laser wakefield accelerator

E. Gerstmayr, B. Kettle, M. J. V. Streeter +16

We present an experimental demonstration of a bright multi-MeV gamma source driven by a petawatt laser. The source generates on average $(1.2\pm 0.6)\times 10^9$ photons above 1 MeV…