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首页> 外文期刊>Physica Scripta: An International Journal for Experimental and Theoretical Physics >Fabrication, physical characteristic, and gamma-photon attenuation parameters of newly developed molybdenum reinforced bismuth borate glasses
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Fabrication, physical characteristic, and gamma-photon attenuation parameters of newly developed molybdenum reinforced bismuth borate glasses

机译：新开发的钼增强铋硼酸盐玻璃的制造，物理特性和γ-光子衰减参数

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摘要

To observe the direct effect of molybdenum reinforcement on nuclear radiation shielding properties, a detailed investigation was performed with a group of bismuth borate glasses. Accordingly, glass samples with the nominal compositions (65-x)B2O3 + 20Bi(2)O(3) + 15Na(2)O + xMoO(3): x = 0, 1.5, 3, 4.5, 6 and 7.5 wt% have been synthesized by the solid state conventional method. The samples were named as M0 (x = 0), M1 (x = 1.5), M2 (x = 3), M3 (x = 4.5), M4 (x = 6) and M5 (x = 7.5). Physical characteristics and gamma-photon attenuation properties of (M0-M5) glasses have been investigated via MCNPX simulation code and XCOM program. XRD patterns confirmed that M0-M5 glasses were in amorphous nature. The density of the prepared glasses increased from 4.4104 for M0 glass sample to 5.3012 gm cm(-3), while molar volume decreased from 33.50083 to 28.92114 cm(3) mol(-1). The mass attenuation coefficient (mu(m)) increased with the increment of MoO3 concentration in mol% and followed the order: (M0)mu(m) < (M1)mu(m) < (M2)mu(m) < (M3)mu(m) < (M4)mu(m) < (M5)mu(m) at all photon energies. The mean free path (MFP), half value layer (HVL), and tenth value layer (TVL) for the prepared glasses M0-M5 have the same trend and follow the order: (M5)(MFP, HVL, TVL) < (M4) (MFP, HVL, TVL) < (M3) (MFP, HVL, TVL) < (M2) (MFP, HVL, TVL) < (M1) (MFP, HVL, TVL) < (M1) (MFP, HVL, TVL). The M5 glass sample (with maximum MoO3) achieved highest effective atomic number (Z(eff))and equivalent atomic numbers (Z(eq)) values for all photon energy ranges (low-medium-high). Among all the glass samples, the exposure build-up factor (EBF) and energy absorption build-up factor (EABF) values for M5 glass sample with the highest MoO3 additive are minimum due to the low amount of photons accumulated. These results indicate that M5 glass sample theoretically provides maximum protection for gamma-rays among all the samples.
机译：为了观察钼增强对核辐射屏蔽性能的直接影响，使用一组硼酸铋玻璃进行了详细的研究。因此，通过固态常规方法合成了标称成分（65-x）B2O3+20Bi（2）O（3）+15Na（2）O+xMoO（3）：x=0,1.5,3,4.5,6和7.5 wt%的玻璃样品。这些样本被命名为M0（x=0）、M1（x=1.5）、M2（x=3）、M3（x=4.5）、M4（x=6）和M5（x=7.5）。利用MCNPX模拟程序和XCOM程序研究了（M0-M5）玻璃的物理特性和伽马光子衰减特性。XRD图谱证实M0-M5玻璃为非晶态。制备的玻璃密度从M0玻璃样品的4.4104增加到5.3012 gm-cm（-3），摩尔体积从33.50083减少到28.92114 cm（3）mol（-1）。质量衰减系数（mu（m））随MoO3浓度的增加而增加，单位为mol%，在所有光子能量下，其顺序为：（M0）mu（m）<（M1）mu（m）<（M2）mu（m）<（M3）mu（m）<（M4）mu（m）<（M5）mu（m）。制备的玻璃M0-M5的平均自由程（MFP）、半值层（HVL）和第十值层（TVL）具有相同的趋势，并遵循以下顺序：（M5）（MFP，HVL，TVL）<（M4）（MFP，HVL，TVL）<（M3）（MFP，HVL，TVL）<（M2）（MFP，HVL，TVL）<（M1）（MFP，HVL，TVL）<（M1）（MFP，HVL，TVL）。M5玻璃样品（具有最大MoO3）在所有光子能量范围（低-中-高）达到最高有效原子序数（Z（eff））和等效原子序数（Z（eq））值。在所有玻璃样品中，含有最高MoO3添加剂的M5玻璃样品的曝光累积因子（EBF）和能量吸收累积因子（EABF）值最小，因为累积的光子量较低。这些结果表明，M5玻璃样品理论上对所有样品中的伽马射线提供了最大的保护。

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