A multi-material diagnosis method based on high-energy proton radiography

Diagnosis of fluids is extremely significant at high temperatures and pressures. As an advanced imaging technique, high-energy proton radiography has great potential for application to the diagnosis high-density fluids. In radiography, angular collimator can control flux thus enable material reconstruction density. this paper, we propose a multi-material diagnostic method using collimators. The verified by reconstructing density distribution from obtained via theoretical calculations numerical simulations. We simulate 20 GeV system Geant4 software toolkit obtain characteristic parameters single-material objects. design several concentric spherical objects verify method. discuss its detonation tests. results show that determine boundary information about each component object. Thus, it be used diagnose mixed reconstruct densities in detonation.