New gadolinium based glasses for gamma-rays shielding materials

Kaewjang, S.; Maghanemi, Utumma; Kothan, S.; Kim, H.J.; Limkitjaroenporn, P.; Kaewkhao, J.

doi:10.1016/j.nucengdes.2014.08.030

Cited by 107 publications

(30 citation statements)

References 22 publications

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“…It was found that the effective atomic number increased with Bi 2 O 3 content. The higher values of Z eff represent the higher number of electrons per atom for the interaction with gamma-rays and can reduce gamma-ray intensity after travelling through the glass samples [19]. The value differences between the experimental and the theoretical results suggest systematic errors; these may be due to the nonstoichiometry ratio of the glass formula after melting at high temperature.…”

Section: Resultsmentioning

confidence: 96%

Pb-free Radiation Shielding Glass Using Coal Fly Ash

et al. 2015

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Abstract. In this work, Pb-free shielding glass samples were prepared by the melt quenching technique using subbituminous fly ash (SFA) composed of xBi 2 O 3 : (60-x)B 2 O 3 : 10Na 2 O : 30SFA (where x = 10, 15, 20, 25, 30 and 35 by wt%). The samples were investigated for their physical and radiation shielding properties. The density and hardness were measured. The results showed that the density increased with the increase of Bi 2 O 3 content. The highest value of hardness was observed for glass sample with 30 wt% of Bi 2 O 3 concentration. The samples were investigated under 662 keV gamma ray and the results were compared with theoretical calculations. The values of the mass attenuation coefficient (µ m ), the atomic cross section (σ e ) and the effective atomic number (Z eff ) were found to increase with an increase of the Bi 2 O 3 concentration and were in good agreement with the theoretical calculations. The best results for the half-value layer (HVL) were observed in the sample with 35 wt% of Bi 2 O 3 concentration, better than the values of barite concrete. These results demonstrate the viability of using coal fly ash waste for radiation shielding glass without PbO in the glass matrices.

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Section: Resultsmentioning

confidence: 96%

Pb-free Radiation Shielding Glass Using Coal Fly Ash

et al. 2015

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“…S. Kaewjang et al fabricated and investigated the (80−x)B 2 O 3 -10SiO 2 -10CaO-xGd 2 O 3 (where x = 15, 20, 25, 30, and 35 mol%) for their radiation-shielding, physical, and optical properties. They found that the experimental values of the mass-attenuation coefficients, effective atomic number, and effective electron densities of the glasses increased with the increasing of Gd2O3 concentration, and also with the increasing of photon energy from 223 to 662 keV [ 42 ]. N. Chanthima et al investigated the impacts of BaO on the physical properties of zinc borate-based glasses.…”

Section: Introductionmentioning

confidence: 99%

In-Silico Monte Carlo Simulation Trials for Investigation of V2O5 Reinforcement Effect on Ternary Zinc Borate Glasses: Nuclear Radiation Shielding Dynamics

et al. 2021

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In the current study, promising glass composites based on vanadium pentoxide (V2O5)-doped zinc borate (ZnB) were investigated in terms of their nuclear-radiation-shielding dynamics. The mass and linear attenuation coefficient, half-value layer, mean free path, tenth-value layer, effective atomic number, exposure-buildup factor, and energy-absorption-buildup factor were deeply simulated by using MCNPX code, Phy-X PSD code, and WinXcom to study the validation of ZBV1, ZBV2, ZBV3, and ZBV4 based on (100−x)(0.6ZnO-0.4B2O3)(x)(V2O5) (x = 1, 2, 3, 4 mol%) samples against ionizing radiation. The results showed that attenuation competencies of the studied glasses slightly changed while increasing the V2O5 content from 1 mol% to 4 mol%. The domination of ZnO concentration in the composition compared to B2O3 makes ZnO substitution with V2O5 more dominant, leading to a decrease in density. Since density has a significant role in the attenuation of gamma rays, a negative effect was observed. It can be concluded that the aforementioned substitution can negatively affect the shielding competencies of studied glasses.

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“…For many nuclear facilities in more aggressive environments, advance shielding materials with excellent physical and mechanical performances could guarantee their safety, compliance, and efficiency. [6][7][8][9][10][11] The thermal conductivity is also a rather important issue because the rapid release of heat originating from nuclear reactions can ensure the safety of the system. 12,13 Owing to the limits of space and maneuverability, the researchers found that the weight and the volume of radiation-shielding material are also fairly restricted.…”

Section: Introductionmentioning

confidence: 99%

Boracic polyethylene/polyethylene wax blends and open-cell nickel foams as neutron-shielding composite

Zhang

Chen

Tang

et al. 2017

Journal of Reinforced Plastics and Composites

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This work shows that mechanical properties, thermal conductivity, and secondary gamma-ray shielding ability can be significantly improved when open-cell nickel foams are embedded into the shielding composites. The boracic polyethylene/polyethylene wax blends and open-cell nickel foam composites (PPNM) are designed and prepared by permeating homogeneous mixed melt fillers into open-cell nickel foams. The ratio of polyethylene and polyethylene wax is investigated to achieve higher filling rate. The quasi-static compressive response of PPNMs and polyethylene/polyethylene wax blends is measured, and the crystallization properties are studied by differential scanning calorimetry. The neutron and secondary gamma-ray shielding abilities of PPNMs are also simulated based on Monte Carlo particle transport method. Results show that the compression strength of PPNMs with boron carbide is slightly improved when compared with polyethylene/polyethylene wax blends. The nickel foams in PPNM composites improve the energy-absorbing efficiency by 30%. The thermal conductivity of PPNMs is 300% higher than polyethylene/polyethylene wax. The calculated results show that neutron-shielding abilities of PPNMs increase as content of boron carbide increases. Moreover, secondary gamma-ray shielding ability of PPNMs containing boron carbide is obviously higher than polyethylene/polyethylene wax. The PPNMs containing boron carbide neutron-shielding materials are proved to have good thermal conductivity, mechanical properties, and radiation-shielding ability.

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New gadolinium based glasses for gamma-rays shielding materials

Cited by 107 publications

References 22 publications

Pb-free Radiation Shielding Glass Using Coal Fly Ash

Pb-free Radiation Shielding Glass Using Coal Fly Ash

In-Silico Monte Carlo Simulation Trials for Investigation of V2O5 Reinforcement Effect on Ternary Zinc Borate Glasses: Nuclear Radiation Shielding Dynamics

Boracic polyethylene/polyethylene wax blends and open-cell nickel foams as neutron-shielding composite

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