Radiation shielding competence of silicate and borate heavy metal oxide glasses: Comparative study

In this study, a group of heavy metal oxide glasses with a nominal composition of 55B2O3 + 19.5TeO2 + 10K2O + (15−x) PbO + xAl2O3 + 0.5Eu2O3 (where x = 0, 2.5, 5, 7.5, 10, 12.5, and 15 in wt.%) were investigated in terms of their nuclear radiation shielding properties. These glasses containing lanthanide-doped heavy metal oxide were envisioned to yield valuable results in respect to radiation shielding, and thus a detailed investigation was carried out; the obtained results were compared with traditional and new generation shields. Advanced simulation and theoretical methods have been utilized in a wide range of energy regions. Our results showed that the AL0.0 sample with the highest PbO contribution had superior shielding properties in the entire energy range. The effective removal of cross-sections for fast neutrons (ΣR) was also examined. The results indicated that AL5.0 had the greatest value. While increasing the concentration of Al2O3 in samples had a negative effect on the radiation shielding characteristics, it can be concluded that using PbO in the Eu3+ doped heavy metal oxide glasses could be a useful tool to keep gamma-ray shielding properties at a maximum level.

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A comparative study on WO3 + MoO3 containing TeO2 and Sb2O3-based heavy metal oxide glasses

Journal of Non-Crystalline Solids ◽

10.1016/j.jnoncrysol.2020.120093 ◽

2020 ◽

Vol 541 ◽

pp. 120093 ◽

Cited By ~ 1

Author(s):

A.E. Ersundu ◽

M. Çelikbilek Ersundu ◽

N. Gedikoğlu

Keyword(s):

Heavy Metal ◽

Metal Oxide ◽

Comparative Study ◽

Oxide Glasses

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Ta2O5 Nanocrystals Strengthened Mechanical, Magnetic, and Radiation Shielding Properties of Heavy Metal Oxide Glass

Molecules ◽

10.3390/molecules26154494 ◽

2021 ◽

Vol 26 (15) ◽

pp. 4494

Author(s):

Xinhai Zhang ◽

Qiuling Chen ◽

Shouhua Zhang

Keyword(s):

Heavy Metal ◽

Metal Oxide ◽

Network Connectivity ◽

Radiation Shielding ◽

Oxide Glass ◽

Oxide Glasses ◽

X Ray Diffraction ◽

Network Modifier ◽

Doped Glasses ◽

Doped Glass

In this study, for the first time, diamagnetic 5d0 Ta5+ ions and Ta2O5 nanocrystals were utilized to enhance the structural, mechanical, magnetic, and radiation shielding of heavy metal oxide glasses. Transparent Ta2O5 nanocrystal-doped heavy metal oxide glasses were obtained, and the embedded Ta2O5 nanocrystals had sizes ranging from 20 to 30 nm. The structural analysis of the Ta2O5 nanocrystal displays the transformation from hexagonal to orthorhombic Ta2O5. Structures of doped glasses were studied through X-ray diffraction and infrared and Raman spectra, which reveal that Ta2O5 exists in highly doped glass as TaO6 octahedral units, acting as a network modifier. Ta5+ ions strengthened the network connectivity of 1–5% Ta2O5-doped glasses, but Ta5+ acted as a network modifier in a 10% doped sample and changed the frame coordination units of the glass. All Ta2O5-doped glasses exhibited improved Vicker’s hardness, magnetization (9.53 × 10−6 emu/mol), and radiation shielding behaviors (RPE% = 96–98.8%, MAC = 32.012 cm2/g, MFP = 5.02 cm, HVL = 0.0035–3.322 cm, and Zeff = 30.5) due to the increase in density and polarizability of the Ta2O5 nanocrystals.

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