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- 저자 : O. Agar (검색결과 2 건)
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An extensive investigation on gamma ray shielding features of Pd/Ag-based alloys
O. Agar,M.I. Sayyed,F. Akman,H.O. Tekin,M.R. Kaçal 한국원자력학회 2019 Nuclear Engineering and Technology Vol.51 No.3
A comprehensive study of photon interaction features has been made for some alloys containing Pd andAg content to evaluate its possible use as alternative gamma radiations shielding material. The massattenuation coefficient (m/r) of the present alloys was measured at various photon energies between81 keVe1333 keV utilizing HPGe detector. The measured m/r values were compared to those of theoreticaland computational (MCNPX code) results. The results exhibited that the m/r values of the studiedalloys are in the same line with results of WinXCOM software and MCNPX code results at all energies. Moreover, Pd75/Ag25 alloy sample has the maximum radiation protection efficiency (about 53% at81 keV) and lowest half value layer, which shows that Pd75/Ag25 has superior gamma radiationshielding performance among the other compared alloys.
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Ferdi. Akman,H. Ogul,I. Ozkan,M.R. Kaçal,O. Agar,H. Polat,K. Dilsiz 한국원자력학회 2022 Nuclear Engineering and Technology Vol.54 No.1
Advanced radiation applications have been widely used and extended to many fields. As a result of thisfact, choosing an appropriate shielding material based on the radiation application has become vital. Inthis regard, the integration of elements into polymer composites has been investigated and contributedto the quantity and quality of radiation shielding materials. This study reports photon attenuation parametersand electromagnetic shielding effectiveness of a novel polymer composite prepared with amatrix reinforced with three different proportions (5, 10, and 15 wt%) of niobium content. Addition of Nbdopant improves both photon attenuation and electromagnetic shielding effectiveness for the investigatedcomposites. Therefore, Nb(15%) polymer composite with highest concentration has been found tobe the best absorber for ionizing and non-ionizing radiations. Consequently, the performed analyzesprovide evidences that the prepared Nb-reinforced polymer composite could be effectively used asphoton radiation attenuator and electromagnetic shielding material
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