Effect of rare earth dopants on the radiation shielding properties of barium tellurite glasses

P. Vani; G. Vinitha; M.I. Sayyed; Maha M. AlShammari; N. Manikandan

doi:https://doi.org/10.1016/j.net.2021.06.009

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자료유형: 학술저널

저자정보: P. Vani (Division of Physics, School of Advanced Sciences, Vellore Institute of Technology) G. Vinitha (Division of Physics, School of Advanced Sciences, Vellore Institute of Technology) M.I. Sayyed (Isra University) Maha M. AlShammari (Imam Abdulrahman Bin Faisal University) N. Manikandan (Division of Physics, School of Advanced Sciences, Vellore Institute of Technology)

저널정보: 한국원자력학회 Nuclear Engineering and Technology Nuclear Engineering and Technology 제53권 제12호

발행연도: 2021.12

수록면: 4,106 - 4,113 (8page)

DOI: https://doi.org/10.1016/j.net.2021.06.009

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Rare earth doped barium tellurite glasses were synthesised and explored for their radiation shieldingapplications. All the samples showed good thermal stability with values varying between 101 C and135 C based on dopants. Structural properties showed the dominance of matrix elements compared torare earth dopants in forming the bridging and non-bridging atoms in the network. Bandgap valuesvaried between 3.30 and 4.05 eV which was found to be monotonic with respective rare earth dopantsindicating their modification effect in the network. Various radiation shielding parameters like linearattenuation coefficient, mean free path and half value layer were calculated and each showed the effectof doping. For all samples, LAC values decreased with increase in energy and is attributed to photoelectricmechanism. Thulium doped glasses showed the highest value of 1.18 cm1 at 0.245 MeV for 2 mol.%doping, which decreased in the order of erbium, holmium and the base barium tellurite glass, while halfvalue layer and mean free paths showed an opposite trend with least value for 2 mol.% thulium indicating that thulium doped samples are better attenuators compared to undoped and other rare earthdoped samples. Studies indicate an increased level of thulium doping in barium tellurite glasses can leadto efficient shielding materials for high energy radiation.

#Tellurite glasses #Rare earth dopants #Radiation shielding #Linear attenuation coefficient #Half value layer

참고문헌 (36)

참고문헌 신청

S. Yasmin / 2018 / Studies of ionizing radiation shielding effectiveness of silica-based commercial glasses used in Bangladeshi dwellings / Respir. Physiol 9:541~549

Erdem S¸ akar / 2020 / Phy-X/PSD: development of a user-friendly online software for calculation of parameters relevant to radiation shielding and dosimetry / Radn. Phys. Chem 166:108496

M. I. Sayyed / 2021 / Radiation shielding characteristics of selected ceramics using the EPICS2017 library / Ceram. Int 47:13181

Nadin Jamal / 2019 / Rafidah Zainon Conventional and new lead-free radiation shielding materials for radiation protection in nuclear medicine: a review / Radn. Phys. Chem 165:108439

Mengge Dong / 2017 / Highly cost-effective shielding composite made from vanadium slag and boron-rich slag and its properties / Phys. Chem 141:239~244

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