XXXV, No. 2, Pp. 87-188
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Authors: Sami A. Hammoud and Mahmoud I. Abbas
In this paper, we present a straightforward analytical method for calculating the efficiencies of an ovoid shape (elliptical cylindrical) detector by using a randomly located point source. To determine the activity of an unknown radioactive source, absolute efficiency is required and we should take into account the attenuation of the gamma-ray photons by the source container and the detector housing materials. The soundness of the resultant straightforward analytical method was successfully confirmed by comparison with some published data.
Key words: solid angle, elliptical cylindrical detector, geometrical efficiency, gamma ray
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