期刊
RADIATION PHYSICS AND CHEMISTRY
卷 215, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.radphyschem.2023.111336
关键词
Zircon mineral; La/nd-doped zirconia; Radiation protection; Monte Carlo simulation
This study investigated the effects of Neodymium (III) nitrate hexahydrate and lanthanum nitrate hexahydrate on the structural and radiation shielding properties of zircon mineral, and a new La/Nb-doped ZrO2 nanocomposite was fabricated. Experimental techniques such as energy-dispersive X-ray, scanning electron microscope, transmission electron microscopy, and X-ray diffraction pattern were used to analyze the structure and composition of the fabricated nanocomposites. Monte Carlo simulation was employed to evaluate the gamma-ray shielding properties. The results showed that the fabricated composites had good shielding characteristics, with a shielding capacity of 30-50% compared to pure lead in the intermediate energy range of 0.244-2.506 MeV.
In the present work, the role of Neodymium (III) nitrate hexahydrate [Nd (NO3)2] and lanthanum nitrate hexahydrate [La (NO3)3 & sdot;6H2O] on the structural and radiation shielding properties of zircon mineral was examined. Therefore, a new La/Nb-doped ZrO2 nanocomposite was fabricated. Various experimental techniques such as energy-dispersive X-ray, scanning electron microscope, transmission electron microscopy, and X-ray diffraction pattern were utilized to discover the structure and chemical composition, as well as the morphology of the fabricated La/Nb-doped ZrO2 nanocomposites. Additionally, for the estimation of the fabricated composites' gamma-ray shielding properties, Monte Carlo simulation was employed. Among low and intermediate gamma-photon energy, the study affirmed a good shielding characteristic for the fabricated composites, where the linear attenuation coefficient reduced from 245.64 to 0.21 cm-1 when the gamma-photon energy was raised respectively from 0.022 to 2.506 MeV. Compared to pure lead, the fabricated composites showed good shielding properties, where the shielding capacity reached 30-50% of the pure lead element in the 0.244-2.506 MeV intermediate energy interval.
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