Case Study of Air Kerma Standardization Comparison for Cs-137 For Radiation Protection Level
DOI:
https://doi.org/10.37134/jsml.vol13.1.9.2025Keywords:
Air Kerma, Cesium 137, Chamber, Gamma Rays, Radiation ProtectionAbstract
In this work, 137Cs radioactive source was measured at the Gamma irradiation lab, Radiation Safety & Health Division, Malaysian Nuclear Agency. The experiment was developed to ensure the standard of the calibration annual processes. Different thicknesses of lead sheets were used for beam attenuation to measure the 137Cs dose range. Five sets of charges per minute were measured using an ionization chamber at a 1.0 m source-detector distance (SDDs). The temperature pressure correction factor, KTP was calculated from the average pressure and temperature of each set. The beam charge of the unattenuated and the lead attenuated beam was measured. The air kerma, K of each set, has been calculated and compared with the 2016 data set. The deviation of the measured doses was calculated and is within below 2%. The close agreement of the year 2016 and 2023 results ensures the uniformity of the measurements has been complied with.
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Copyright (c) 2025 Faridah Lisa Supian, Mohd Taufik Dolah, Mohd Syahriman Mohd Azmi, Chee Fah Wong, Abdullah Faisal Al Naim
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