ISSUES WITH THE HIGH ENERGY RADIOGRAPHY SIMULATIONS

摘要

Although most of the industrial radiography relies on x-ray tubes, in some cases, gamma rays or linear accelerators form the interrogating radiation beam. Due to high energy levels of photons in such cases, new physics start to accompany radiation absorption, scattering events. Most of these new physics are interactions of charged particles produced by high-energy photons. Charged particles with sufficient energy can produce photons. High-energy radiography simulations need to account for both photon and charged particle transport for proper computation of photon fluxes. This work will outline various physical mechanisms that need to be taken into consideration and challenges that come with designing deterministic algorithms that can handle the mathematics related to these new physical mechanisms.