Bioactive glasses and direct effect of increased K2O additive for nuclear shielding performance: A comparative investigation
Bioactive glasses and direct effect of increased K2O additive for nuclear shielding performance: A comparative investigation
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DOI：
10.1016/j.ceramint.2019.09.095
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发表时间：
2020-02-01
影响因子：
5.2
通讯作者：
Tekin, H. O.
中科院分区：
文献类型：
--
作者：
Kilicoglu, Ozge;Tekin, H. O.
研究了K2 O添加剂对磷酸钙基四元生物活性玻璃P2 O 5-CaO-Na 2 O-K2 O核辐射屏蔽性能的直接影响。用MCNPX（v-2.6-0）模拟程序，用蒙特卡罗模拟技术模拟了γ射线衰减装置。接下来，所有的生物活性玻璃已被定义考虑其化学性质和材料密度，分别。用MCNPX程序计算了质量衰减系数（MAC），并将所得结果用于确定另一重要的γ射线屏蔽参数。此外，还对作为电离辐射与材料环境相互作用特性重要参数的生物活性玻璃的曝光积累因子（EBF）和能量吸收积累因子（EABF）进行了详细的计算。此外，还计算了快中子的有效去除截面。为了比较我们的结果，本研究所获得的HVL值进行了比较与氧化铜和钴氧化物取代的生物活性玻璃。在所研究的生物活性玻璃中，最大MAC值为具有较高K2 O添加剂的PCNK 60样品。结果表明，生物活性玻璃中添加剂的化学结构与玻璃的辐射衰减性能密切相关。
This study aimed to provide a large-scale investigation on direct effect of K2O additive nuclear radiation shielding properties of calcium phosphate based bioactive quaternary P2O5-CaO-Na2O-K2O glasses. A gamma ray attenuation setup has been modeled in MCNPX (v-2.6-0) simulation code using Monte Carlo simulation technique. Next, all the bioactive glasses have been defined considering their chemical properties and material densities, respectively. The mass attenuation coefficients (MAC) have been calculated by using MCNPX code and obtained results have been used for determination of another vital gamma-ray shielding parameters. Moreover, a detailed calculation has been done for determination of exposure buildup factor (EBF) and energy absorption buildup factor (EABF) of investigated bioactive glasses which should be considered as important parameters for interaction properties of ionizing radiation with material environment. In addition, effective removal cross sections for fast neutrons have been calculated. To compare our results, obtained HVL values of the present investigation have been compared with copper oxide and cobalt oxide substituted bioactive glasses. Among the investigated bioactive glasses, the maximum MAC values were reported for PCNK60 sample with higher K2O additive. It can be concluded that chemical structure of additive materials in the bioactive glasses is strongly related with the radiation attenuation properties of bioactive glasses.