论文标题
$ nd_ {0.6} sr_ {0.4} mn_ {1-y} ni_ {y} o__ {3} $代替具有不同浓度的nickle的辐射屏蔽属性
Radiation Shielding Properties of $Nd_{0.6}Sr_{0.4}Mn_{1-y}Ni_{y}O_{3}$ Substitute with Different Concentrations of Nickle
论文作者
论文摘要
在这项工作中，我们研究了Ni浓度对$ nd_ {0.6} sr_ {0.4} mn_ {1-y} ni_ {y} o_ {y} o_ {3} $（0.00 $ \ leq $ y $ $ $ $ $ \ y $ 0.20）perovskite ceramic ceramic ceramic的材料的影响。 X射线衍射（XRD）分析表明，这些陶瓷具有在广泛的NI替代方案中具有组空间PNMA的正交结构。此外，分析显示晶格参数几乎线性降低，并且单位细胞体积（V）导致随着NI浓度的升高，堆积密度逐渐增加。评估了所有陶瓷样品的光子，中子和质子的屏蔽特征。通过使用（MCNP）（5.0版），以0.1、0.6、1.25、5和15 MEV计算质量衰减系数（MAC）；将结果与使用PHY-X和XCOM程序获得的相应值进行了比较。获得的结果显示，随着NI含量的增加，略有增强。 NI的替代导致快速中子（$σ$ r）值的有效去除横截面的逐步增强。而质子的质量停止功率（MSP）和预测范围的值随着Ni浓度的增加而逐渐减少。这些发现表明，当前的陶瓷样品可作为辐射屏蔽材料有用。
In this work, we investigate the effect of Ni concentration on several shielding properties of $Nd_{0.6}Sr_{0.4}Mn_{1-y}Ni_{y}O_{3}$ (0.00 $\leq$ y $\leq$ 0.20) perovskite ceramic for possible use as radiation shielding materials. X-ray diffraction (XRD) analysis revealed that these ceramics have the orthorhombic structure with group space Pnma over a wide range of Ni-substitutions. Moreover, the analysis showed a nearly linear decrease in the lattice parameters and the unit cell volume (V) causing a gradual increase in the packing density with increasing Ni concentration. The shielding features for photons, neutrons, and protons of all ceramic samples were assessed. The mass attenuation coefficient (MAC) was computed at 0.1, 0.6, 1.25, 5 and 15 MeV by utilizing (MCNP) (version 5.0); the results were compared with the corresponding values obtained using Phy-X and XCOM program. The results obtained showed slight enhancement with increasing Ni contents. The substitution of Ni leads to progressive enhancement in effective removal cross-section of fast neutron ($Σ$R) values. Whereas the values of Mass Stopping Power (MSP) and projected range for the protons showed a gradual reduction with increasing Ni concentration. These findings suggest that the current ceramic samples can be useful as radiation shielding materials.
