PDF(Pubmed)
Abstract：
Aiming to extend the scope of utilizing glass in radiation shielding, this work investigates the radiation interaction response of a borate-based glass system. Four borate-glass samples of different substituting concentrations of calcium oxide ( 70 - x )B2O3: 10 Na2O : 5 Al2O3 : 15 BaO: x CaO were prepared. To assess the shielding performance of the prepared glass samples, a high-purity germanium detector and different radioactive sources (different energies) were used. Via the narrow beam method, the linear attenuation coefficients (LACs) were experimentally measured. So, the transmission factor (TF), the half-value layer (HVL), the tenth value layer (TVL), the mean free path (MFP), and the radiation protection efficiency (RPE) were calculated for all prepared samples. It was observed that the increase of the concentration of calcium oxide in the proposed borate-based glass samples leads to improve their performance in shielding against radiation. At low energy, the RPE of the samples is almost 100%. However, it was observed that as energy of the radiation source increases, the shielding performance of the samples will decrease. High energy dependence was found when calculating TF, HVL, TVL, and MFP. They were increased with the increase of the energy of the incident photons. At 0.662 MeV, the TF values are equal to 79.26, 79.00, 79.72, and 78.43% for BNABC-1, BNABC-2, BNABC-3, and BNABC-4 in the same oder, respectively. The application of the proposed composition of borate-based glass as a transparent shield against low-energy ionizing radiation was highlighted.
摘要：
为了扩大玻璃在辐射屏蔽中的使用范围，这项工作研究了硼酸盐基玻璃系统的辐射相互作用响应。制备了四种不同取代浓度的氧化钙（70-x）B2O3：10Na2O：5Al2O3：15BaO：xCaO的硼酸盐玻璃样品。为了评估制备的玻璃样品的屏蔽性能，使用了高纯度锗探测器和不同的放射源(不同的能量)。通过窄光束法，线性衰减系数(LAC)进行了实验测量。所以,传输因子(TF)，半值层(HVL)，第十值层(TVL)，平均自由路径(MFP)，并计算所有制备的样品的辐射防护效率(RPE)。观察到所提出的硼酸盐基玻璃样品中氧化钙浓度的增加导致它们在屏蔽辐射方面的性能改善。在低能量下，样品的RPE几乎是100%。然而,据观察，随着辐射源能量的增加，样品的屏蔽性能会下降。计算TF时发现高能量依赖性，HVL,TVL,和MFP。它们随着入射光子能量的增加而增加。在0.662MeV时，对于BNABC-1、BNABC-2、BNABC-3和BNABC-4，TF值等于79.26、79.00、79.72和78.43%，分别。重点介绍了所提出的硼酸盐基玻璃组合物作为低能量电离辐射的透明屏障的应用。
