Investigation of mechanical and radiation shielding features of heavy metal oxide based phosphate glasses for gamma radiation attenuation applications

2019 ◽  
Vol 30 (13) ◽  
pp. 12140-12151 ◽  
Author(s):  
Shams A. M. Issa ◽  
M. I. Sayyed ◽  
A. M. A. Mostafa ◽  
G. Lakshminarayana ◽  
I. V. Kityk
Keyword(s):  
Heavy Metal ◽  
Metal Oxide ◽  
Gamma Radiation ◽  
Radiation Shielding ◽  
Phosphate Glasses ◽  
Radiation Attenuation

scholarly journals Gamma, Fast Neutron, Proton, and Alpha Shielding Properties of Borate Glasses: A Closer Look on Lead (II) Oxide and Bismuth (III) Oxide Reinforcement

2021 ◽  
Vol 11 (15) ◽  
pp. 6837
Author(s):  
Ghada ALMisned ◽  
Huseyin O. Tekin ◽  
Esra Kavaz ◽  
Ghaida Bilal ◽  
Shams A.M. Issa ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Oxide ◽  
Gamma Radiation ◽  
Fast Neutron ◽  
Effective Atomic Number ◽  
Mean Free Path ◽  
Oxide Glass ◽  
Borate Glasses ◽  
Radiation Attenuation ◽  
Shielding Properties

The purpose of this research was to investigate the shielding characteristics of high-amount heavy metal oxide and Eu3+-activated borate glasses based on 10La2O3–50HMO–(40–x) B2O3–xEu2O3 (x = 0, 0.5, 1, 2, and HMO = PbO, Bi2O3). Critical gamma radiation attenuation characteristics, particularly mass attenuation coefficients of investigated heavy metal oxide glass samples, were determined using Monte Carlo simulations and the Phy-x/PSD software. Following that, we looked at the half-value layer, mean free path, effective atomic number, and build-up factors across a broad energy range (0.015–15 MeV). According to the study’s results, the addition of Eu2O3 enhanced the mass attenuation coefficient and effective atomic number, while reducing the half-value layer, mean free path, and accumulation factors. In terms of gamma radiation attenuation, the LBi50BEu glass system surpassed the LPb50BEu glass system in terms of overall shielding properties against nuclear radiation. Additionally, the heavy metal oxide glass’ efficacy as a neutron shield was determined using fast neutron removal cross-sections (ΣR). LBi50BEu2 glass was shown to be more effective in preventing the penetration of charged particle radiation.

Role of Bi2O3 in altering the structural, optical, mechanical, radiation shielding and thermoluminescence properties of heavy metal oxide borosilicate glasses

2020 ◽  
Vol 542 ◽  
pp. 120136
Author(s):  
Ashwitha Nancy D'Souza ◽  
Nimitha S. Prabhu ◽  
K. Sharmila ◽  
M. I Sayyed ◽  
H. M Somshekarappa ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Oxide ◽  
Radiation Shielding ◽  
Borosilicate Glasses

scholarly journals A Closer Look on Nuclear Radiation Shielding Properties of Eu3+ Doped Heavy Metal Oxide Glasses: Impact of Al2O3/PbO Substitution

Materials ◽  
2021 ◽  
Vol 14 (18) ◽  
pp. 5334
Author(s):  
Ghada ALMisned ◽  
Huseyin O. Tekin ◽  
Antoaneta Ene ◽  
Shams A. M. Issa ◽  
Gokhan Kilic ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Oxide ◽  
Maximum Level ◽  
Radiation Shielding ◽  
Nuclear Radiation ◽  
Fast Neutrons ◽  
Nominal Composition ◽  
Oxide Glasses ◽  
Wide Range ◽  
Shielding Properties

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.

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

Molecules ◽  
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.

Photoluminescence, nonlinear optical and gamma radiation shielding properties of high concentration of Eu2O3 doped heavy metal borate glasses

Optik ◽  
2022 ◽  
Vol 251 ◽  
pp. 168433
Author(s):  
Vinod Hegde ◽  
Sudha D. Kamath ◽  
Imen Kebaili ◽  
M.I. Sayyed ◽  
K.N. Sathish ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Gamma Radiation ◽  
Nonlinear Optical ◽  
Radiation Shielding ◽  
Borate Glasses ◽  
High Concentration ◽  
Shielding Properties ◽  
Metal Borate

Experimental investigation of photon attenuation parameters for different binary alloys

2019 ◽  
Vol 107 (4) ◽  
pp. 339-348 ◽  
Author(s):  
Mohammed I. Sayyed ◽  
Ferdi Akman ◽  
Mustafa Recep Kaçal
Keyword(s):  
Gamma Radiation ◽  
Atomic Number ◽  
Radiation Shielding ◽  
Buildup Factor ◽  
Alloy Sample ◽  
Attenuation Coefficients ◽  
Radiation Attenuation ◽  
Photon Attenuation ◽  
Mass Attenuation Coefficients ◽  
Mass Attenuation

Abstract Recently, technologists try to develop novel gamma radiation shielding materials instead of traditional materials such as lead and concrete with improved performance in gamma radiation shielding in medical applications and nuclear reactors. For this purpose, alloys such as stainless steel (SS) and carbon steel (CS) attracted much attention, these days. Preliminary results on such alloys have shown better attenuation of γ rays as compared to traditional shielding materials. This work aimed to conduct research on different alloy samples to evaluate their radiation attenuation efficiency and their suitability for radiation shielding when utilized in nuclear facilities. The mass attenuation coefficients for eight alloy samples were measured at different photon energies ranging from 80.997 to 1332.501 keV using transmission geometry. From the mass attenuation coefficients, different photon attenuation parameters such as half value layer, mean free path, effective atomic number, and radiation protection efficiency were evaluated. In addition, the equivalent atomic number and the exposure buildup factor were calculated using G-P fitting method for photon energy ranging from 0.015 MeV to 15 MeV at different penetration depth. The results showed that the Zeff values remain almost constant for all samples except W72/Cu28 in which the Zeff for this sample tends to decrease with the energy. The lowest value of half value layer is found for the alloy sample Ta97.5/W2.5 and the highest value is found for the alloy sample In50/Sn50. The Ta97.5/W2.5, Ta90/W10, Ta95/W5 samples demonstrated good radiation attenuation properties.

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