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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Characterization of a broad range gamma-ray and neutron shielding properties of MgO-Al2O3-SiO2-B2O3 and Na2O-Al2O3-SiO2 glass systems
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Characterization of a broad range gamma-ray and neutron shielding properties of MgO-Al2O3-SiO2-B2O3 and Na2O-Al2O3-SiO2 glass systems

机译：MgO-Al2O3-SiO2-B2O3和Na 2 O-Al2O3-SiO2玻璃系统的宽范围伽马射线和中子屏蔽性能的表征

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In this research, the radiation shielding parameters for two glass systems with composition of 20MgO-(20-x)Al2O3-57SiO(2)-3B(2)O(3)-xCr(2)O(3) (x = 0, 0.1, 0.25, 0.5 and 1 mol%) and Na2O-Al2O3 SiO2 glasses were studied. For this purpose, a scintillation detector namely 3 x 3 inch NaI(Tl) has been designed for detection of photons through MCNPX simulation code. Thus, the mass attenuation coefficients (mu/rho) and some other gamma shielding quantities were calculated. The estimated MCNPX data of all the glasses were compared and approved with those of WinXCOM program. The gamma ray buildup factors for the two glass systems were also determined in a wide energy range of 0.02-15 MeV for penetration depths up to 15 mfp. The results revealed that the mass attenuation coefficients for the glass samples in the first glass system are higher than those in the glasses in the second system and thus the glasses coded as MASBC have more ability in reducing radiation than NAS glasses. Among the selected glasses, C4 has the largest values of mu(rho) and lowest half value layer, and therefore this glass sample has better shielding features than other samples. Besides, 3-1 glass sample has the lowest values; therefore this sample has the least ability to block and reduce the incoming gamma radiation. The results also showed that the effective atomic number (Z(eff)) of the glasses in the first composition increased with increasing the content of Cr2O3, and Zeff in the second glass system (i.e. NAS) increased with increasing the Al2O3 content. The values of mass removal cross section for neutron (Sigma(R)) vary between 0.09112 and 0.09163 and 0.08415-0.08710 for the first and second glass system respectively. The obtained results from the present investigation can be useful to understanding of influence of Cr2O3 and Al2O3 additive on nuclear radiation shielding properties of tellurite MgO-Al2O3-SiO2-B2O3 and Na2O-Al2O3-SiO2 glasses.
机译：在该研究中，两个玻璃系统的辐射屏蔽参数，其中两个玻璃系统为20MGO-（20-x）Al 2 O 3 -57SiO（2）-3b（2）O（3）-XCR（2）O（3）（x = 0研究了0.1,0.25,0.5和1mol％）和Na 2 O-Al 2 O 3 SiO 2玻璃。为此目的，闪烁检测器即3×3英寸Nai（TL），专为通过MCNPX仿真代码检测光子。因此，计算质量衰减系数（MU / RHO）和一些其他伽马屏蔽量。将所有眼镜的估计MCNPX数据与Winxcom计划的比较和批准。两个玻璃系统的伽马射线积聚因子也在0.02-15mev的宽度范围内测定，用于渗透深度高达15mFp。结果表明，第一玻璃系统中的玻璃样品的质量衰减系数高于第二系统中的眼镜中的玻璃样品，因此编码为MASBC的眼镜具有比NAS眼镜还原辐射的能力更高。在选定的眼镜中，C4具有MU（RHO）和最低半值层的最大值，因此该玻璃样品具有比其他样品更好的屏蔽特征。此外，3-1玻璃样品具有最低值;因此，该样品具有阻塞和减少进入的伽马辐射的能力。结果还表明，第一种组合物中的眼镜的有效原子数（Z（型沟））随着Cr2O3的含量而增加，并且在增加Al2O3含量增加第二玻璃系统中的Zeff（即NaS）。用于中子（Sigma（R））的质量去除横截面的值分别为第一和第二玻璃系统的0.09112和0.09163和0.08415-0.08710。本研究的所得结果可用于了解Cr2O3和Al2O3添加剂对碲酸盐MgO-Al2O3-SiO2-B2O3和Na 2 O-Al 2 O 3-SiO 2玻璃的核辐射屏蔽性能的影响。

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