Fig. 4: Simulated angular distribution.

GEANT4 simulations of the angular distribution of electrons and photons above 7.5 MeV after the laser pulse interaction with an aerogel-foam (CHO) target combined with a 1 mm thick converter (Au). The angular distributions are shown using the same color scale in arbitrary unit. The half divergence angle of the electron beam is 17^∘, where the photons are distributed within the half divergence angle of 10.5^∘. The white curves represent the line-out (dashed lines) of the colored distribution in the range of the horizontal angle in degree (^∘).