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Kilicoglu O, More CV, Akman F, Dilsiz K, Oğul H, Kaçal M, Polat H, Agar O. Micro Pb filled polymer composites: Theoretical, experimental and simulation results for γ-ray shielding performance. Radiat Phys Chem Oxf Engl 1993 2022. [DOI: 10.1016/j.radphyschem.2022.110039] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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ALMisned G, Akman F, AbuShanab WS, Tekin HO, Kaçal MR, Issa SAM, Polat H, Oltulu M, Ene A, Zakaly HMH. Novel Cu/Zn Reinforced Polymer Composites: Experimental Characterization for Radiation Protection Efficiency (RPE) and Shielding Properties for Alpha, Proton, Neutron, and Gamma Radiations. Polymers (Basel) 2021; 13:polym13183157. [PMID: 34578058 PMCID: PMC8473252 DOI: 10.3390/polym13183157] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 09/05/2021] [Accepted: 09/14/2021] [Indexed: 11/16/2022] Open
Abstract
In this study, brass (Cu/Zn) reinforced polymer composites with different proportions of brass powders were fabricated. Different types of nuclear shielding parameters such as mass and linear attenuation coefficients, radiation protection efficiency, half and tenth value layers, and effective atomic number values were determined experimentally and theoretically in the energy range of 0.060–1.408 MeV in terms of gamma-ray shielding capabilities of fabricated polymer composites. A high Purity Germanium detector (HPGe) in conjunction with a Multi-Channel Analyzer (MCA) and twenty-two characteristic gamma-ray energies have been used in the experimental phase. In addition, the exposure and energy absorption buildup factors of reinforced Cu/Zn composites were calculated, and relative dose distribution values were computed to verify them. Proton mass stopping power (ΨP), proton projected range (ΦP), alpha mass stopping power (ΨA), and alpha projected range (ΦA) parameters, which indicate the interactions of the produced composites with charged particle radiation, were investigated. Fast neutron removal cross-section (ΣR) results were determined to give an idea in terms of neutron shielding. According to the obtained results, it is reported that the CuZn20 coded sample’s ability to attenuate gamma-ray and charged particle radiation is more efficient than that of other prepared composites. A CuZn05 coded sample was found to be more suitable for neutron shielding capability.
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Affiliation(s)
- Ghada ALMisned
- Department of Physics, College of Science, Princess Nourah Bint Abdulrahman University, Riyadh 11671, Saudi Arabia;
| | - F. Akman
- Program of Occupational Health and Safety, Department of Property Protection and Security, Vocational School of Social Sciences, Bingöl University, Bingöl 12000, Turkey;
- Central Laboratory Application and Research Center, Bingöl University, Bingöl 12000, Turkey
| | - Waheed S. AbuShanab
- Marine Engineering Department, Faculty of Maritime Studies and Marine Engineering, King Abdulaziz University, Jeddah 21589, Saudi Arabia;
| | - Huseyin O. Tekin
- Medical Diagnostic Imaging Department, College of Health Sciences, University of Sharjah, Sharjah 27272, United Arab Emirates
- Medical Radiation Research Center (USMERA), Uskudar University, Istanbul 34672, Turkey
- Correspondence: (H.O.T.); (A.E.); (H.M.H.Z.)
| | - Mustata R. Kaçal
- Department of Physics, Arts and Sciences Faculty, Giresun University, Giresun 28100, Turkey;
| | - Shams A. M. Issa
- Department of Physics, Faculty of Science, University of Tabuk, Tabuk 47512, Saudi Arabia;
- Physics Department, Faculty of Science, Al-Azhar University, Assiut 71452, Egypt
| | - Hasan Polat
- Department of Architecture and Urban Planning, Vocational School of Technical Sciences, Bingöl University, Bingö 12000, Turkey;
| | - Meral Oltulu
- Department of Civil Engineering, Engineering Faculty, Atatürk University, Erzurum 25240, Turkey;
| | - Antoaneta Ene
- INPOLDE Research Center, Department of Chemistry, Faculty of Sciences and Environment, Physics and Environment, Dunarea de Jos University of Galati, 47 Domneasca Street, 800008 Galati, Romania
- Correspondence: (H.O.T.); (A.E.); (H.M.H.Z.)
| | - Hesham M. H. Zakaly
- Physics Department, Faculty of Science, Al-Azhar University, Assiut 71452, Egypt
- Institute of Physics and Technology, Ural Federal University, 620002 Ekaterinburg, Russia
- Correspondence: (H.O.T.); (A.E.); (H.M.H.Z.)
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Shielding features, to non-ionizing and ionizing photons, of FeCr-based composites. Appl Radiat Isot 2020; 167:109470. [PMID: 33059194 DOI: 10.1016/j.apradiso.2020.109470] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Revised: 10/01/2020] [Accepted: 10/08/2020] [Indexed: 01/10/2023]
Abstract
This paper has been focused on the a detail study on non-ionizing and ionizing electromagnetic (EM) shielding features and build-up factors of reinforced with ferrochrome (FeCr) composites. The non-inozing electromagnetic shielding performance quantities of composites have been determined in the frequency range between 12.4 and 18.0 GHz. Also, the experimental mass attenuation coefficients (MAC) have been estimated using gamma spectrometer and various radioactive point, and compared to those of theoretical and simulation (MCNPX) results. With help of the obtained linear attenuation coefficients, several attenuation quantities, i.e., effective atomic number (Zeff), half value layer (HVL), and mean free path (MFP) have been discussed. In addition, buildup factors (EBF and EABF) values have been estimated utilizing the G-P fitting method. The results showed that composite encoded FeCr(15%) is superior shielding attenuation properties among the investigated samples.
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N values estimation based on photon flux simulation with Geant4 toolkit. Appl Radiat Isot 2018; 136:127-132. [DOI: 10.1016/j.apradiso.2018.02.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2017] [Revised: 02/12/2018] [Accepted: 02/14/2018] [Indexed: 11/17/2022]
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Determination of the Sr/Ca ratio of tooth samples by photoactivation analysis in Southern Turkey. RADIOCHIM ACTA 2018. [DOI: 10.1515/ract-2017-2918] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
A nuclear analytical technique, namely instrumental photon activation analysis (IPAA), was used to determine Sr and Ca concentrations in human teeth. This work was conducted using the first accelerator facility, an off-shelf clinical linear accelerator (cLINAC), in Turkey. The tooth samples supplied by the Akdeniz University Faculty of Dentistry were analyzed for determination of the Sr/Ca element ratio. The results were obtained to demonstrate the impact of socioeconomic changes on dietary habits. A calibration material (CM; a mixture of calcium and strontium oxides) was required for quantification of the analytical results. The tooth samples, together with the CM, were exposed to 18 MeV end-point energy bremsstrahlung photons from the cLINAC. Thereafter, the γ-ray spectra of the samples and the CM were obtained using high resolution γ spectroscopy. Variations in the Sr/Ca ratio in the teeth of patients fed with beef and fizzy beverages were investigated in this study.
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Sun ZJ, Okafor K, Isa S. Determining concentrations of elements with different reaction channels in photon activation. Appl Radiat Isot 2017. [PMID: 28628887 DOI: 10.1016/j.apradiso.2017.06.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
In photon activation, same element may be activated by the bremsstrahlung beam through different nuclear reaction channels and produce different radioisotopes. These radioisotopes follow their own decay schemes and generate characteristic gamma rays. This phenomenon usually is an interference in spectra analysis, but it also offers a theoretical feasibility to determine the concentration of one element through different reaction channels. To realize this theoretical feasibility, we conducted series of photon activation experiments with sample and reference of known concentrations. Irradiation of the samples and the references were conducted with electronic LINAC with different photon converters at a peak energy around 30MeV. Several elements and their corresponding reaction channels were chosen to validate this procedure. Calculations of PAA were based on the internal monitor method. Our results have confirmed the advantages of current PAA reaction channel selection, and show that it might be beneficial to calculate the concentration of same elements with different reaction channels in some certain occasions. N-values, which indicate the relative intensity of reaction channels, were calculated and compared with those values generated from the photon activation at the Federal Institute for Materials Research and Testing in Germany (BAM). Results suggested that N values are impacted by several parameters of electron beam, and the design of electron-gamma converter may play a dominant role in determining N values.
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Affiliation(s)
- Z J Sun
- Nuclear Engineering Program, South Carolina State University, 300 College Street NE, Orangeburg, SC 29117, USA.
| | - K Okafor
- Nuclear Engineering Program, South Carolina State University, 300 College Street NE, Orangeburg, SC 29117, USA
| | - S Isa
- Department of Industrial & Electrical Engineering Technology, South Carolina State University, 300 College Street NE, Orangeburg, SC 29117, USA
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