Study of cavity theory through the Monte Carlo method using the Geant4 code

In simple terms, it is known that Cavity Theory provides a basis for Ionizing Radiation Dosimetry, allowing the dose in a material that fills a cavity to be related to the dose in the medium surrounding this cavity. In this work, computational simulations were performed using the Geant4 tool, based on the Monte Carlo Method, to study Cavity Theory. The objective to be achieved is to verify the validity of this theory for some medium-cavity pairs: water and lithium fluoride, air and hydrogen, aluminum and copper, and water and soft tissue. The Bragg-Gray Cavity Theory describes well the behavior of absorbed doses in small cavities, while Burlin's Cavity Theory is valid from small to large cavities