![Sample our Physical Sciences journals, sign in here to start your FREE access for 14 days]({"type":"image" , "src" : "/sda/110819/TOC-Subject-Sample-2021-Physical-Sciences.jpg"})
Abstract
A simple formula for air-scattered γ-rays is proposed. The proposed formula is derived using a single-scattering approximation, with exponential attenuation and buildup factor for scattered γ-ray energy. The results of calculation obtained with the formula are compared with those by Monte Carlo method, and by single-scattering calculation without exponential attenuation and buildup, for line beams of mono-energetic γ-rays emitted from a point source.
For higher energies, the air-scattered flux and dose rate given by this simple approximation agree fairly well with the Monte Carlo calculations at all beam angles and source-detector distances. The accuracy is within about 10%.
The flux and dose rate for γ-rays emitted isotropically from the point source have also been calculated, and are presented as a function of distance.