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Updated: Dec 24, 2025

Visualization of Low-Level Gamma Radiation Sources Using a Low-Cost, High-Sensitivity, Omnidirectional Compton Camera
Published on: January 30, 2020
Response of plastic scintillator to gamma sources
Suffian M Tajudin1, Y Namito2, T Sanami2
1Faculty of Health Sciences, Universiti Sultan Zainal Abidin (UniSZA), 21300, Kuala Nerus, Terengganu, Malaysia.
Abstract:
In this study, we developed a method for directly determining the energy deposited over the entire energy range by monitoring the light output from a plastic scintillator under gamma irradiation. The relative light output was analyzed based on Birks' semi-empirical formula for ionization to obtain the quenching parameter as kB = 0.016 ± 0.0004 g cm-2 MeV-1. Comparisons of experimental and calculated results for the light output spectra showed that considering the quenching effect, background subtraction, source casing, and energy sampling were essential for achieving good agreement.
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