Fig. 1: Layout of the proton acceleration experiment. | Nature Communications

Fig. 1: Layout of the proton acceleration experiment.

From: Laser-driven proton acceleration beyond 100 MeV by radiation pressure and Coulomb repulsion in a conduction-restricted plasma

Fig. 1

a An ultrahigh-contrast, multi-petawatt laser irradiated on the centre of a conduction-restricted nanometre foil at an incident angle of 20° to accelerate protons within tens of microns. The accelerated protons at 0° and 30° to the laser axis were measured online by two Thomson parabola spectrometers. An electron spectrometer was installed in the normal direction of the target rear surface (20°). b Microscope photo of a conduction-restricted square foil with a transverse width D of 80 μm. c For the selective shot, one stack detector, composed of aluminium, copper, and CR-39 plates as well as radiochromic films (RCFs), was inserted to measure the spatial profile and spectrum of the protons simultaneously. The insets are results from a 30-μm-wide foil.

Back to article page