Makale KoleksiyonuArticle collectionhttps://hdl.handle.net/20.500.12511/45122024-03-29T12:00:24Z2024-03-29T12:00:24ZAn investigation on gamma-ray shielding properties of quaternary glassy composite (Na2Si3O7/Bi2O3/B2O3/Sb2O3) by BXCOM and MCNP 6.2 codeAkçalı, ÖzgürÇağlar, MustafaToker, OzanBilmez, BayramKavanoz, Hüseyin Birtanİçelli, Orhanhttps://hdl.handle.net/20.500.12511/54222023-01-31T17:22:01Z2020-01-01T00:00:00ZAn investigation on gamma-ray shielding properties of quaternary glassy composite (Na2Si3O7/Bi2O3/B2O3/Sb2O3) by BXCOM and MCNP 6.2 code
Akçalı, Özgür; Çağlar, Mustafa; Toker, Ozan; Bilmez, Bayram; Kavanoz, Hüseyin Birtan; İçelli, Orhan
Analytic and stochastic methods were proposed for the determination of gamma-ray radiation shielding properties of the glassy composites. Radiation shielding properties such as mass attenuation coefficients, effective atomic numbers, effective electron numbers, build-up factors (exposure build-up factors and energy absorption build-up factors) can be determined with these techniques. A versatile quaternary composite was studied with different mass ratios in order to optimize the gamma radiation attenuation. Exposure build-up factors (EBFs), energy absorption build-up factors (EABFs), effective atomic numbers (Z(eff)) and effective electron densities (N-eff) were calculated via BXCOM. Furthermore, MCNP transport code, version of 6.2, was used to simulate the mass attenuation coefficients (mu/rho) and the half-value layers (HVLs) of the composites. Since they are compatible, simulation and BXCOM results denote that these methods can be used to determine the radiation shielding parameters for the glassy composites for which there are no satisfactory experimental values available. All in all, the optimum mass ratio, having the highest radiation attenuation, was determined as [Na2Si3O7/Bi2O3(65/35)/B2O3(2)/Sb2O3(11)], so that glassy composite might be preferred as a radiation shield in various applications. The quaternary glassy composites investigated in this study, performs better than ordinary concrete, getting close to pure lead as a radiation shield.
2020-01-01T00:00:00ZRadiation interaction parameters for blood samples of breast cancer patients: an MCNP studyToker, OzanÇağlar, MustafaÖz, ErsoyBakirdere, SezgimTopdağı, ÖmerEyecioğlu, Önderİçelli, Orhanhttps://hdl.handle.net/20.500.12511/45672023-01-31T17:22:14Z2019-01-01T00:00:00ZRadiation interaction parameters for blood samples of breast cancer patients: an MCNP study
Toker, Ozan; Çağlar, Mustafa; Öz, Ersoy; Bakirdere, Sezgim; Topdağı, Ömer; Eyecioğlu, Önder; İçelli, Orhan
The main goal of this study was to determine radiation interaction parameters such as mass attenuation coefficients, effective atomic numbers, and effective electron densities depending on element concentrations (Na, K, Cu, Zn, Al, Ca, Mg Cr, Fe, Se) in blood samples of patients with breast cancer. Eighty blood samples were collected and analyzed in this study (40 from breast cancer patients and 40 from healthy patients). The determination of element concentrations of the samples was performed with inductively coupled plasma-mass spectrometry (ICP-MS) and inductively coupled plasma-optical emission spectrometry (ICP-OES) after which the element concentrations were normalized to percentage. Mass attenuation coefficients were calculated by Monte Carlo simulation method. In addition, effective atomic numbers and effective electron density values of the blood samples were calculated with the ZXCOM program. One of the most important results of this study is that differences in radiation interaction parameters between the two groups were observed. More specifically, the mass attenuation coefficients of the healthy group's blood samples were higher than those of the cancerous group at photon energies of 50 keV, 100 keV, 250 keV and 500 keV, while they were lower at 1 MeV. All the MCNP results were consistent with the results obtained from ZXCOM. As the main result of this study it is concluded that photon atomic parameters such as mass attenuation coefficient, effective atomic number and electron density may be considered in cancer diagnosis or treatment modalities.
2019-01-01T00:00:00ZNa2Si3O7/BaO composites for the gamma-ray shielding in medical applications: Experimental, MCNP5, and WinXCom studiesÇağlar, MustafaKayacık, HandeKarabul, YaşarKılıç, MehmetGüven Özdemir, Zeynepİçelli, Orhanhttps://hdl.handle.net/20.500.12511/45652023-01-31T17:22:01Z2019-01-01T00:00:00ZNa2Si3O7/BaO composites for the gamma-ray shielding in medical applications: Experimental, MCNP5, and WinXCom studies
Çağlar, Mustafa; Kayacık, Hande; Karabul, Yaşar; Kılıç, Mehmet; Güven Özdemir, Zeynep; İçelli, Orhan
The role of BaO in the glassy structured Na2Si3O7 was investigated in the context of gamma radiations shielding parameters in the study. The mass attenuation coefficient, half layer value, and mean free path of the Na2Si3O7/BaO composites were calculated experimentally for the photons with the energies of 81 keV and 356 key emitted from 133Ba point radioactive source. The same parameters were also calculated by Monte Carlo N-particle simulation (MCNP5) for the gamma photons which are emitted from Ba-133, (241)AM (TC)-T-99m, (LU)-L-177, Ir-192, and Cs-137 radioactive sources. The effective atomic number and effective electron density were determined by WinXCom software. Additionally, the scattered gamma photon intensity of the composites was realized for the energy of 364 key and compared with the most utilized radiation shielding material lead. It was concluded that the composite having the highest BaO additive exhibits the best gamma photon absorption ability at all energies investigated.
2019-01-01T00:00:00ZA novel comprehensive utilization of vanadium slag/epoxy resin/antimony trioxide ternary composite as gamma ray shielding material by MCNP 6.2 and BXCOMKavanoz, Hüseyin BirtanAkçalı, ÖzgürToker, OzanBilmez, BayramÇağlar, Mustafaİçelli, Orhanhttps://hdl.handle.net/20.500.12511/45322023-01-31T17:27:11Z2019-01-01T00:00:00ZA novel comprehensive utilization of vanadium slag/epoxy resin/antimony trioxide ternary composite as gamma ray shielding material by MCNP 6.2 and BXCOM
Kavanoz, Hüseyin Birtan; Akçalı, Özgür; Toker, Ozan; Bilmez, Bayram; Çağlar, Mustafa; İçelli, Orhan
New research on composite materials was proposed for both gamma ray shielding and fireproofing. When compared to concrete, composite materials show up higher shielding properties in the 0.015 MeV–15 MeV incident energy range. The composite was prepared with vanadium slag, epoxy resin and antimony-trioxide. Different ratios of ternary composite were investigated in order to determine the optimum ratio for shielding and anti-flame properties. Photon atomic parameters with shielding were determined by BXCOM and MCNP 6.2. BXCOM program determines the buildup factors (both EBF and EABF) in the 0.015–15 MeV energy range for up to 40 mean free path (mfp) penetration depth. It uses geometric progression (G-P) fitting method. The effective electron number () and the effective atomic number () were also obtained with the BXCOM software. Furthermore, parameters such as the mass attenuation coefficients , half-value layer (HVL) and tenth-value layer (TVL) were determined by MCNP 6.2 in order to confirm and compare with WinXCOM results. Obtained results may be concluded to have preferable shielding properties for the composite as an alternative to concrete. Antimony-trioxide (x=0.03), was found to exhibit the minimum EBF and EABF values, and is a convenient radiation shielding material. The Epoxy resin-vanadium slag and antimony-trioxide ternary glassy composite indicates better radiation shielding properties than concrete, but weaker than lead.
2019-01-01T00:00:00Z