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Updated: May 16, 2026

Irradiator Commissioning and Dosimetry for Assessment of LQ α and β Parameters, Radiation Dosing Schema, and in vivo Dose Deposition
Published on: March 11, 2021
Mathematical approach to determine the linear attenuation coefficient without collimator in gamma-ray spectrometry
Chang-Jong Kim1, Yoon-Hae Cho, Jong-In Byun
1Department of Radiation Measurement and Radiation Safety, University of Science and Technology (UST), 62 Gwahak-ro, Yuseong-gu, Daejeon 305-338, Republic of Korea.
Abstract:
The linear attenuation coefficient is an important factor in the correction of self-attenuation. In this study, a cone beam from a source of ∼1 μCi was utilised, not equipped with the collimator, and a complete geometric configuration was mathematically modelled. Samples of NaCl, Na2CO3 and (NH4)2SO4 were used to verify the mathematical model. The linear attenuation coefficient can be calculated within ∼4 % of difference in the cylindrical sample at energies of 59.5, 121.8, 244.7, 344.2 and 444.0 keV.
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