| Autor: |
Wirawan, Rahadi, Qomariyah, Nurul, Ardianto, Teguh, Kurniawidi, Dian Wijaya |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 2023, Vol. 2619 Issue 1, p1-6, 6p |
| Abstrakt: |
In this study, we investigated the effect of the iron sand content in a composite block of radiation shielding on the linear attenuation coefficient and radiation protection effectiveness parameters. The composite block is made of pumice, iron sand, and cement. GEANT4 simulation approaches were carried out for transmitting gamma photons of 133Ba (0.356 MeV), 137Cs (0.662 MeV), and 60Co (1.173 MeV; 1.333 MeV) sources through the composite block (10cm × 10cm × 2cm). The composite block consists of five different mass fractions of iron sand-pumice (75%) with a 25% mass fraction of Portland concrete. Attenuation of gamma full-peak energies was evaluated based on Gaussian fitting in the energy spectrum distribution detected by NaI(Tl) scintillation detector. There is a decrease in the full-peak height of the gamma energy due to the addition of iron sand fraction mass. The addition of iron sand composition increases the linear attenuation coefficient value and radiation protection efficiency (RPE). For a composite thickness of 2 cm and small photon energies such as 133Ba, the RPE of composite blocks can reach 40%. Meanwhile, for the 60Co energies, RPE can reach 25%. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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