Journal of the Nigerian Association of Mathematical Physics

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Calculation of Dose Gamma Ray Build up Factor in Some Homogenous Materials

MA Arogunjo, JB Hamzat


The gamma ray buildup factor was calculated by analyzing the narrow- beam and broad-beam geometry equations using Taylor’s formula for isotropic sources and homogeneous materials. The buildup factor was programmed using MATLAB software to operate with any radiation energy (E), atomic number (Z) and the thickness of the absorber in term of the relaxation length (μx). The model demonstrated capability in the design of an appropriate shielding material for radiation protection, absolute volume and activity measurement and in beam transport studies.

Keywords: build up factor, radiation shielding, gamma radiation, point isotropic sources, Taylor’s formula.

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