Fig. 6: Position-to-proton-energy calibration.
From: Ion acceleration from micrometric targets immersed in an intense laser field

Raw images of TPIS traces for irradiation experiments under identical conditions, for cases where the scintillator was a uncovered, b covered with a 11 μm thick Al foil, and c covered with a 6 μm thick Ti foil. The dashed frame indicates the position of the filter.