Abstract
Fricke Xylenol Gel (FXG) is a chemical dosimeter based on swine skin gelatin, Xylenol Orange (XO) and ferrous sulphate. When irradiated with ionizing radiation, absorbed dose distributions and profiles can be inferred through spectrophotometric techniques due to the [Fe <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">+3</sup> -XO] complex absorbencies, which are field size and post irradiation time dependent. Although these two dependencies have already been experimentally considered in literature, theoretical models have not been extensively explored. In this work, a Monte Carlo Method (MCM) simulation was proposed in order to assess electron beam profiles for: variable field size and post irradiation time. The proposed simulational model describes the above processes, in a similar way when FXG samples are irradiated with megavoltage electrons, i.e., transition from Gaussian-like profiles to step functions (small to large fields, respectively) and Gaussian time dependent curves for diffusion effects (Fokker-Planck theory), indicating that this transition is primarily controlled by the beam geometric factors and the radiation random nature.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.