Mathematical approach to determine the linear attenuation coefficient without collimator in gamma-ray spectrometry

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)2SO...

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Bibliographic Details
Published in:Radiation protection dosimetry 2013-07, Vol.155 (2), p.236-240
Main Authors: Kim, Chang-Jong, Cho, Yoon-Hae, Byun, Jong-In, Yun, Ju-Yong
Format: Article
Language:English
Subjects:
Ammonium Sulfate - chemistry
Carbonates - chemistry
Gamma Rays
Models, Theoretical
Photons
Scattering, Radiation
Sodium Chloride - chemistry
Spectrometry, Gamma - instrumentation
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Summary: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.
ISSN:0144-8420
1742-3406
DOI:10.1093/rpd/ncs329