A study for gamma-ray attenuation performances of barite filled polymer composites. (January 2023)

• Record Type: Journal Article
• Authors: Turhan, Mehmet Fatih; Akman, Ferdi; Kaçal, Mustafa Recep; Polat, Hasan; Demirkol, İskender
• Is Part Of: Applied radiation and isotopes. Volume 191(2023)
• Publication Date: 2023-01
• Subjects: Barite -- Polymer composite -- Attenuation coefficient -- Value layer -- Build-up factor; Radiology -- Periodicals; Radiation -- Industrial applications -- Periodicals; Nuclear chemistry -- Periodicals; Internet resource; Periodical; 660.298
• DOI: 10.1016/j.apradiso.2022.110568
• Languages: English
• ISSNs: 0969-8043

Abstract

Abstract: In this study, radiation protection efficiency ( RPE ) for the coded as UP-Ba0, UP-Ba25, UP-Ba50, UP-Ba75 and UP-Ba100 at different sample thicknesses, total mass attenuation coefficient ( μ/ρ ), linear attenuation coefficients ( μ ), half value layers ( HVL ), tenth value layers ( TVL ), mean free paths ( MFP ), effective atomic numbers ( Z eff ) and effective electron densities ( N E ) were determined at various gamma energies between 59.5 and 1408.0 keV. With the help of the geometric progression ( G-P ) fitting method, the energy absorption build-up factor ( EABF ) and exposure build-up factor ( EBF ) values were calculated in the energy range from 0.015 MeV to 15 MeV for the produced composites. HPGe detector and eight radioactive sources ( 241 Am, 152 Eu, 137 Cs, 133 Ba, 60 Co, 57 Co, 54 Mn and 22 Na) were utilized in the experiment. Experimental results were compared with theoretical calculations and it has been observed that there is a good agreement between theoretical and experimental results. It was observed that RPE, μ/ρ, μ, Z eff and N E parameters increased with increasing barite amount and decreased with increasing energy, while the opposite situation was observed in HVL, TVL and MFP parameters. EABF and EBF values increase with increasing penetration depth. As a result, UP-Ba100 is a good radiation absorber according to the other studied barite filled polymer composites. Highlights: The composites reinforced with barite in four different ratios were produced. Their gamma radiation attenuation capacities were investigated. The experimental and theoretical results are in agreement with each other. The gamma shielding ability increases with increasing amount of barite. UP-Ba100 is a good radiation absorber among studied barite doped polymer composites.