Normalization of proton-radiographic images of objects with quasi-uniform areal density

A technique of calculating the beam transmission through static objects with a quasi-uniform areal density using a single proton-radiographic image was developed under the condition of a gaussian-like transverse beam profile. The calculated transmission images are intended for the density reconstruction of the objects under study. A proton-radiographic investigation of static targets was carried out at the experimental facility with special magnetic optics PUMA at proton energy of 800 MeV and particle intensity 1010 per image. It has been shown that the use of the technique allows restoring the transmission of an object under study with an average relative error of about 1-1.2%.