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Novel borosilicate glass system: Na2B4O7-SiO2-MnO2: Synthesis, average electronics polarizability, optical basicity, and gamma-ray shielding features
Journal of Non-Crystalline Solids ( IF 3.2 ) Pub Date : 2020-11-04 , DOI: 10.1016/j.jnoncrysol.2020.120509
E.A. Abdel Wahab , M.S.I. Koubisy , M.I. Sayyed , K.A. Mahmoud , A.F. Zatsepin , Sayed A. Makhlouf , Kh.S. Shaaban

A novel glass system with a chemical composition described by the formula 50SiO2– (48+x) Na2B4O7 – x MnO2 (0≤x≤2 mol %) was fabricated using a melt-quenching method. An XRD diffractometer procedure was applied to check the state of these glass samples. Obtaining the physical and optical values of the manganese borosilicate glass system can help develop solid-state devices and optical memory equipment. The energy gap shifting to higher energies may be due to the formation of bridging oxygens (BO). Urbach energies decrease in the range between 0.736 and 0.485 eV, with increasing the borax concentration between 48-50 mol %, respectively. The polarizability and optical basicity were investigated based on the experimental values of the refractive index for the fabricated glass samples. The polarizability and basicity were found to have the same trend as the refractive index. Monte Carlo N-particle transport code (MCNP-5) was applied to evaluate the gamma-shielding features for the investigated glass samples at gamma-photon energies between 0.248 and 1.406 MeV. The linear attenuation coefficient (LAC) was simulated based on the average track length of the gamma photons inside the fabricated glass samples. The highest LAC was achieved for the G5 glass sample, which has no MnO2 and changed between 0.330-0.153 cm−1 for photons with energy ranged between 0.248 and 1.406 MeV, respectively.



中文翻译:

新型硼硅玻璃系统:Na 2 B 4 O 7 -SiO 2 -MnO 2:合成,平均电子极化率,光学碱度和伽玛射线屏蔽功能

化学组成由式50SiO 2 –(48 + x)Na 2 B 4 O 7 – x MnO 2描述的新型玻璃系统(0≤x≤2mol%)使用熔体淬火法制造。使用XRD衍射仪程序检查这些玻璃样品的状态。获得锰硼硅酸盐玻璃系统的物理和光学值可帮助开发固态设备和光学存储设备。能隙转移到更高的能量可能是由于桥接氧(BO)的形成。Urbach能量在0.736和0.485 eV之间减小,硼砂浓度分别在48-50 mol%之间增加。基于所制备的玻璃样品的折射率的实验值,研究了偏振性和光学碱度。发现极化率和碱度具有与折射率相同的趋势。蒙特卡罗N粒子传输代码(MCNP-5)用于评估在0.248和1.406 MeV之间的伽马光子能量下所研究的玻璃样品的伽马屏蔽功能。线性衰减系数(LAC)是根据制造的玻璃样品内部的伽马光子的平均轨迹长度进行模拟的。没有MnO的G5玻璃样品的LAC最高对于能量在0.248MeV和1.406MeV之间的光子,其在图2中示出并且在0.330-0.153cm -1之间变化。

更新日期:2020-11-06
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