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An extensive investigation on gamma-ray and neutron attenuation parameters of cobalt oxide and nickel oxide substituted bioactive glasses
Ceramics International ( IF 5.2 ) Pub Date : 2019-06-01 , DOI: 10.1016/j.ceramint.2019.02.036
H.O. Tekin , E. Kavaz , E.E. Altunsoy , O. Kilicoglu , O. Agar , T.T. Erguzel , M.I. Sayyed

Abstract This study aimed to investigate the gamma-ray and neutron attenuation parameters of cobalt oxide and nickel oxide substituted ten bioactive glasses. The mass attenuation coefficient ( μ / ρ ) for the selected bioactive glasses was calculated using MCNPX code in photon energy range (0.02 MeV - 20 MeV) and the results were compared with the output of WinXcom software. Other vital gamma-ray attenuation parameters such as half value layer (HVL), tenth value layer (TVL), mean free path (MFP), effective atomic number (Zeff), and effective electron density (Nel) for the selected bioactive glasses were also calculated for each approach. Gamma-ray and neutron transmission factors as well as neutron effective removal cross-sections of each bioactive glass (ΣR) were also taken into consideration to underline the distinctive parameters. Additionally, exposure buildup factor (EBF) values were found with G-P fitting approach depending on the energy and penetration depths. The results points that, the lowest HVL, TVL and MFP values and the highest neutron effective removal cross-sections (ΣR) values are the characteristics of NiO 4C and CoO-4. The results indicate that the density of the material affects the photon and neutron interaction parameters. While NiO 4C has the lowest TF values for both gamma and neutron radiation, the highest ΣR values are collected from NiO 4C glass material. The gamma and neutron transmission factors (TF) of the studied bioactive glasses support the aforementioned results. The lowest Zeff values were generated for 45S5C and 45S5 ordinary glasses, while CoO-4 and NiO 4C doped glasses are having the highest values of Zeff. EBF values of the glasses were also calculated in the energy range 0.015–15 MeV up to 40 mfp. The smallest EBF values were measured for CoO-4 and NiO 4C glasses. It can be concluded that NiO 4C bioactive glass outperformed compared to other studied samples and is a promising bioactive glass for gamma-ray and neutron attenuation.

中文翻译:

氧化钴和氧化镍替代生物活性玻璃的伽马射线和中子衰减参数的广泛研究

摘要 本研究旨在研究氧化钴和氧化镍替代的十种生物活性玻璃的伽马射线和中子衰减参数。所选生物活性玻璃的质量衰减系数 ( μ / ρ ) 在光子能量范围 (0.02 MeV - 20 MeV) 中使用 MCNPX 代码计算,并将结果与​​ WinXcom 软件的输出进行比较。所选生物活性玻璃的其他重要伽马射线衰减参数,如半值层 (HVL)、第十值层 (TVL)、平均自由程 (MFP)、有效原子序数 (Zeff) 和有效电子密度 (Nel) 为还计算了每种方法。伽马射线和中子传输因子以及每种生物活性玻璃 (ΣR) 的中子有效去除截面也被考虑在内,以强调独特的参数。此外,根据能量和穿透深度,使用 GP 拟合方法发现了暴露累积因子 (EBF) 值。结果表明,最低的HVL、TVL和MFP值和最高的中子有效去除截面(ΣR)值是NiO 4C和CoO-4的特性。结果表明材料的密度影响光子和中子相互作用参数。尽管 NiO 4C 对伽马辐射和中子辐射具有最低的 TF 值,但从 NiO 4C 玻璃材料中收集到的 ΣR 值最高。所研究的生物活性玻璃的伽马和中子传输因子 (TF) 支持上述结果。45S5C 和 45S5 普通玻璃的 Zeff 值最低,而 CoO-4 和 NiO 4C 掺杂玻璃的 Zeff 值最高。玻璃的 EBF 值也在 0.015-15 MeV 至 40 mfp 的能量范围内计算。CoO-4 和 NiO 4C 玻璃的 EBF 值最小。可以得出结论,与其他研究样品相比,NiO 4C 生物活性玻璃的表现优于其他样品,并且是一种很有前途的伽马射线和中子衰减生物活性玻璃。
更新日期:2019-06-01
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