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Optical, mechanical properties and gamma ray shielding behavior of TeO2-Bi2O3-PbO-MgO-B2O3 glasses using FLUKA simulation code
Optical Materials ( IF 3.9 ) Pub Date : 2021-02-16 , DOI: 10.1016/j.optmat.2021.110900
Aljawhara H. Almuqrin , M.I. Sayyed , Ashok Kumar , B.O. El-bashir , I. Akkurt

The fabrication of TePbMgX glass system has been done using the standard melt quenching method. The number of bonds per unit volume (nb) increases from 7.77 x 1022 cm−3 to 8.02 x 1022 cm−3. The values of E, K, G and L moduli decreases from 31.58 to 23.22 GPa for E, 14.79 to 11.76 GPa for K, 14.82 to 10.63 GPa for G and 34.55 to 25.93 GPa for L respectively as the PbO increases from 35 to 55%. The σ lies in the range of 0.145–0.172. The indirect and direct band gap energies decrease from 2.832 to 2.673 eV and 3.120–3.005 eV respectively with increasing mol% of the PbO. Moreover, with the help of FLUKA code, we reported the mass attenuation coefficient (μ/ρ) for the prepared samples between 0.122 and 1.458 MeV. The FLUKA results were compared with those generated from Phy-X software and a good agreement was reported and this validated the simulated μ/ρ results. The linear attenuation coefficient (LAC) was determined to examine the influence of adding PbO on the shielding performance of the prepared samples. The LAC result suggested that the attenuation performance for the TePbMgX glass systems is highly effective when exposed to low energy radiation, and, by contrast, the glasses become worse attenuators when exposed to high energy radiation. Also, the glass with 55 mol% of PbO (MgO free) has a higher LAC than the glasses with 35–50 mol% of PbO (5-20 mol% of MgO). The half value layer (HVL) of the glasses greatly increase with increasing energy. For TePbMg1, the HVL increases from 0.050 cm at 0.122 MeV, to 1.559 cm at 0.779 MeV, and 2.573 cm at 1.458 MeV. This HVL results demonstrated that increasing the PbO content in the glasses improves the shielding ability of the glass system, with TePbMg5 having the best HVL at all energies. At 0.3443 MeV, the effective atomic number (Zeff) values increase from 48.40 for 35 mol% PbO, to 49.87 for 40 mol% PbO, 51.28 for 45 mol% PbO, 52.62 for 50 mol% PbO, and 53.89 for 55 mol% PbO. We calculated the Relative reduction in transmission (RRT) and we found that at 0.245 MeV, the RTT values at 0.245 MeV have the following values: 17% and 81% for the samples with thickness of 0.25 and 2.25 cm respectively.



中文翻译:

使用FLUKA模拟代码对TeO 2 -Bi 2 O 3 -PbO-MgO-B 2 O 3玻璃的光学,力学性能和伽玛射线屏蔽行为

TePbMgX玻璃系统的制造已使用标准的熔融淬火方法完成。每单位体积的键数(n b)从7.77 x 10 22  cm -3增加到8.02 x 10 22  cm -3。随着PbO从35%增至55%,E,K,G和L模量值分别从E的31.58降至23.22 GPa,K的14.79至11.76 GPa,G的14.82至10.63 GPa和L的34.55至25.93 GPa。 。σ在0.145–0.172的范围内。随着PbO摩尔%的增加,间接和直接带隙能分别从2.832降至2.673 eV和3.120–3.005 eV。此外,借助FLUKA代码,我们报告了所制备样品的质量衰减系数(μ/ρ)在0.122和1.458 MeV之间。将FLUKA结果与从Phy-X软件生成的结果进行了比较,并报告了良好的一致性,从而验证了模拟的μ/ρ结果。确定线性衰减系数(LAC)以检查添加PbO对制备样品的屏蔽性能的影响。LAC结果表明,TePbMgX玻璃系统的衰减性能在暴露于低能量辐射时非常有效,相反,当暴露于高能量辐射时,玻璃成为更差的衰减器。同样,含55 mol%PbO(不含MgO)的玻璃的LAC高于含35-50 mol%PbO(5-20​​ mol%MgO)的玻璃。眼镜的半价层(HVL)随着能量的增加而大大增加。对于TePbMg1,HVL从0.122 MeV时的0.050 cm增加到0.779 MeV时的1.559 cm和1.458 MeV时的2.573 cm。该HVL结果表明,增加玻璃中PbO的含量可改善玻璃系统的屏蔽能力,其中TePbMg5在所有能量下均具有最佳HVL。在0.3443 MeV时,有效原子序数(Z 当暴露于高能量辐射下时,玻璃会成为更差的衰减器。同样,含55 mol%PbO(不含MgO)的玻璃的LAC高于含35-50 mol%PbO(5-20​​ mol%MgO)的玻璃。眼镜的半价层(HVL)随着能量的增加而大大增加。对于TePbMg1,HVL从0.122 MeV时的0.050 cm增加到0.779 MeV时的1.559 cm和1.458 MeV时的2.573 cm。该HVL结果表明,增加玻璃中PbO的含量可改善玻璃系统的屏蔽能力,其中TePbMg5在所有能量下均具有最佳HVL。在0.3443 MeV时,有效原子序数(Z 当暴露于高能量辐射下时,玻璃会成为更差的衰减器。同样,含55 mol%PbO(不含MgO)的玻璃的LAC高于含35-50 mol%PbO(5-20​​ mol%MgO)的玻璃。眼镜的半价层(HVL)随着能量的增加而大大增加。对于TePbMg1,HVL从0.122 MeV时的0.050 cm增加到0.779 MeV时的1.559 cm和1.458 MeV时的2.573 cm。该HVL结果表明,增加玻璃中PbO的含量可改善玻璃系统的屏蔽能力,其中TePbMg5在所有能量下均具有最佳HVL。在0.3443 MeV时,有效原子序数(Z 眼镜的半价层(HVL)随着能量的增加而大大增加。对于TePbMg1,HVL从0.122 MeV时的0.050 cm增加到0.779 MeV时的1.559 cm和1.458 MeV时的2.573 cm。该HVL结果表明,增加玻璃中PbO的含量可改善玻璃系统的屏蔽能力,其中TePbMg5在所有能量下均具有最佳HVL。在0.3443 MeV时,有效原子序数(Z 眼镜的半价层(HVL)随着能量的增加而大大增加。对于TePbMg1,HVL从0.122 MeV时的0.050 cm增加到0.779 MeV时的1.559 cm和1.458 MeV时的2.573 cm。该HVL结果表明,增加玻璃中PbO的含量可改善玻璃系统的屏蔽能力,其中TePbMg5在所有能量下均具有最佳HVL。在0.3443 MeV时,有效原子序数(Zeff)值从35 mol%PbO的48.40增加到40 mol%PbO的49.87、45 mol%PbO的51.28、50 mol%PbO的52.62和55 mol%PbO的53.89。我们计算了相对透射率(RRT),发现在0.245 MeV处,RTT值在0.245 MeV下具有以下值:厚度分别为0.25和2.25 cm的样品分别为17%和81%。

更新日期:2021-02-16
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