Assessment of radiation attenuation properties for novel alloys: An experimental approach

Sayyed, M.I.; Hamad, M. Kh.; Mhareb, M.H.A.; Kurtuluş, Recep; Dwaikat, Nidal; Aldikhel, Marwa; Elsafi, Mohamed; Taki, Malaa M.; Kavas, Taner; Ziq, Kh. A.; Khandaker, Mayeen Uddin; Bradley, D.A.

doi:10.1016/j.radphyschem.2022.110152

Cited by 35 publications

(10 citation statements)

References 37 publications

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“…It is to be noted that the HVL is decreased as the Bi2O3 increases, especially at low energy. This is due to the fact that, when the CuO is replaced by Bi 2 O 3 in the composite materials, the density of the sample is enhanced, and it is known that the HVL is varies inversely with the density of the shield [ 26 ]. Therefore, adding more Bi 2 O 3 to the prepared composite materials causes a reduction in the HVL as can be observed in Figure 8 .…”

Section: Resultsmentioning

confidence: 99%

“…CuO was chosen to maintain the hardness of the ceramic and give it an attractive look at the same time [ 24 ]. Both CdO and Bi 2 O 3 were selected for their high atomic number and density, and they have high absorption points at different energies, and thus give higher results in attenuating the radiation falling on the material, where Bi 2 O 3 is a good attenuator for gamma rays while CdO is a perfect attenuator for neutrons [ 25 , 26 , 27 ]. The materials were mixed in the same percentages as tabulated in Table 2 , then water was added and stirred well until it became a paste and then poured into cylindrical molds.…”

Section: Methodsmentioning

confidence: 99%

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Investigation of the Gamma-ray Shielding Performance of CuO-CdO-Bi2O3 Bentonite Ceramics

et al. 2022

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The purpose of this research is to identify the radiation shielding capability of ceramics adding CuO, CdO, and Bi2O3 with diverse wt (%). The chemical compositions of the raw ceramics were documented through Energy Dispersive X-ray “EDX” techniques. For aesthetic appeal and solidification, CuO has been chosen to be added to ceramic. Moreover, in the interest of increasing the radiation shielding ability, the high atomic number and density of both CdO and Bi2O3 were suggested for the raw ceramics. To obtain the morphological features of the prepared ceramic samples, a Scanning Electron Microscope, or SEM, was utilized. To verify the experimental results, the MCA value obtained from the Phy-X software was compared to the experimental value collected from the HPGe detector. At energies 0.06 MeV, 0.662 MeV, 1.173 MeV, and 1.333 MeV the linear and mass attenuation coefficients of the prepared ceramics have been measured using a high purity germanium “HPGe” detector as well as three different point sources. Moreover, the relationship between ln(I) and the thickness of the ceramics has been presented here, and the comparison between the LAC of the prepared ceramics with other materials has also been displayed. Bentonite ceramic containing CuO (15 mol %)-CdO (15 mol %)-Bi2O3 (20 mol %) with density 3.6 showed the lowest HVL, MFP, and TVL at all studied energies, yet pure Bentonite ceramic containing only CuO (50 mol %), having density 3.4, presented the greatest values. Hence, it can be concluded that the addition of CdO and Bi2O3 enhances the radiation shielding ability.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Investigation of the Gamma-ray Shielding Performance of CuO-CdO-Bi2O3 Bentonite Ceramics

et al. 2022

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“…The Linear-attenuation factor can be defined as the probability of photons interaction through certain thickness of sample and experimentally estimated by knowing Area with an absorber (A) and Area without an absorber (A 0 ) values using the following relation 34 – 36 : where, is the layer thickness or height of the present epoxy sample. Also, the transmission factor (TF) which defines as the percentage of the intensity of gamma ray photon in the pretense and the absence of the epoxy sample ( ) and must be evaluated by the next equation 37 – 39 : …”

Section: Methodsmentioning

confidence: 99%

Grafting red clay with Bi2O3 nanoparticles into epoxy resin for gamma-ray shielding applications

Elsafi

Almuqrin

Almutairi

et al. 2023

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We developed new composites for photons shielding applications. The composite were prepared with epoxy resin, red clay and bismuth oxide nanoparticles (Bi2O3 NPs). In order to establish which ratio of red clay to Bi2O3 NPs provides the best shielding capabilities, several different ratios of red clay to Bi2O3 NPs were tested. The transmission factor (TF) was calculated for two different thicknesses of each sample. From the TF data, we found that epoxy resin materials have a high attenuation capacity at low energy. For ERB-10 sample (40%Epoxy + 50% Red clay + 10% Bi2O3 NPs), the TF values are 52.3% and 14.3% for thicknesses of 0.5 and 1.5 cm (at 0.06 MeV). The composite which contains the maximum amount of Bi2O3 nanoparticles (40%Epoxy + 50% Red clay + 10% Bi2O3 NPs, coded as ERB-30) has lower TF than the other composites. The TF data demonstrated that ERB-30 is capable of producing more effective attenuation from gamma rays. We also determined the linear attenuation coefficient (LAC) for the prepared composites and we found that the LAC increases for a given energy in proportion to the Bi2O3 NPs ratio. For the ERB-0 (free Bi2O3 NPs), the LAC at 0.662 MeV is 0.143 cm−1, and it increases to 0.805 cm−1 when 10% of Bi2O3 NPs is added to the epoxy resin composite. The half value layer (HVL) results showed that the thickness necessary to shield that photons to its half intensity can be significantly lowered by increasing the weight fraction of the Bi2O3 NPs in the epoxy resin composite from 0 to 30%. The HVL for ERB-20 and ERB-30 were compared with other materials such as (Epoxy as a matrix material and Al2O3, Fe2O3, MgO and ZrO2 as filler oxides in the matrix at 0.662 MeV. The HVL values for ERB-20 and ERB-30 are 4.385 and 3.988 cm and this is lower than all the selected epoxy polymers.

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“…WO 3 and Bi 2 O 3 NPs were prepared chemically by coprecipitation method [11,24] and used as fine aggregates added to the mortar composite to show the improvement of gamma-ray shielding properties, as with the addition of these particles, the density of the slurry composite increases. The ratio of the prepared mortar mixture to other studies aimed at improving the radiation shielding ability [25][26][27]. This mixture was calculated according to the volume by replacing part of the granite dust with sand and the addition of a small amount of nanoparticles in the types of prepared mortars.…”

Section: Methodsmentioning

confidence: 99%

Mechanical, Morphological, Thermal and the Attenuation Properties of Heavy Mortars Doped with Nanoparticles for Gamma-Ray Shielding Applications

et al. 2023

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This study aimed to develop a mortar composite with improved gamma ray shielding properties using WO3 and Bi2O3 nanoparticles, as well as granite residue as a partial replacement of sand. The physical properties and effects of sand substitution and nanoparticle addition on the mortar composite were analyzed. TEM analysis confirmed the size of Bi2O3 and WO3 NPs to be 40 ± 5 nm and 35 ± 2 nm, respectively. SEM images showed that increasing the percentage of granite residues and nanoparticles improved the homogeneity of the mixture and decreased the percentage of voids. TGA analysis indicated that the thermal properties of the material improved with the increase in nanoparticles, without decreasing the material weight at higher temperatures. The linear attenuation coefficients were reported and we found that the LAC value at 0.06 MeV increases by a factor of 2.47 when adding Bi2O3, while it is enhanced by a factor of 1.12 at 0.662 MeV. From the LAC data, the incorporation of Bi2O3 nanoparticles can greatly affect the LAC at low energies, and still have a small but noticeable effect at higher energies. The addition of Bi2O3 nanoparticles into the mortars led to a decrease in the half value layer, resulting in excellent shielding properties against gamma rays. The mean free path of the mortars was found to increase with increasing photon energy, but the addition of Bi2O3 led to a decrease in MFP and better attenuation, making the CGN-20 mortar the most ideal in terms of shielding ability among the prepared mortars. Our findings on the improved gamma ray shielding properties of the developed mortar composite have promising implications for radiation shielding applications and granite waste recycling.

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Assessment of radiation attenuation properties for novel alloys: An experimental approach

Cited by 35 publications

References 37 publications

Investigation of the Gamma-ray Shielding Performance of CuO-CdO-Bi2O3 Bentonite Ceramics

Investigation of the Gamma-ray Shielding Performance of CuO-CdO-Bi2O3 Bentonite Ceramics

Grafting red clay with Bi2O3 nanoparticles into epoxy resin for gamma-ray shielding applications

Mechanical, Morphological, Thermal and the Attenuation Properties of Heavy Mortars Doped with Nanoparticles for Gamma-Ray Shielding Applications

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