A novel CaO–K2O–Na2O–P2O5 glass systems for radiation shielding applications

Al-Harbi, Nuha; Sayyed, M.I.; Al‒Hadeethi, Yas; Kumar, Ashok; Elsafi, Mohamed; Mahmoud, K.A.; Khandaker, Mayeen Uddin; Bradley, D.A.

doi:10.1016/j.radphyschem.2021.109645

Cited by 51 publications

(10 citation statements)

References 54 publications

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“…the thickness needed to reduce the initial intensity to its tenth value and can be estimated from the following equation [34][35][36]:…”

Section: Sem Resultsmentioning

confidence: 99%

“…The other radiation attenuation parameters are based on the LAC, such as the Half Value Layer (HVL), which represents the thickness needed to reduce the initial intensity to its half value; the Mean Free Path (MFP), which represents the path of the photon inside the sample without any interactions; and the Tenth Value Layer (TVL), which represents the thickness needed to reduce the initial intensity to its tenth value and can be estimated from the following equation [34][35][36]:…”

Section: Shielding Propertiesmentioning

confidence: 99%

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The Influence of Bi2O3 Nanoparticle Content on the γ-ray Interaction Parameters of Silicon Rubber

et al. 2022

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In this study, synthetic silicone rubber (SR) and Bi2O3 micro- and nanoparticles were purchased. The percentages for both sizes of Bi2O3 were 10, 20 and 30 wt% as fillers. The morphological, mechanical and shielding properties were determined for all the prepared samples. The Linear Attenuation Coefficient (LAC) values of the silicon rubber (SR) without Bi2O3 and with 5, 10, 30 and 30% Bi2O3 (in micro and nano sizes) were experimentally measured using different radioactive point sources in the energy range varying from 0.06 to 1.333 MeV. Additionally, we theoretically calculated the LAC for SR with micro-Bi2O3 using XCOM software. A good agreement was noticed between the two methods. The NaI (Tl) scintillation detector and four radioactive point sources (Am-241, Ba-133, Cs-137 and Co-60) were used in the measurements. Other shielding parameters were calculated for the prepared samples, such as the Half Value Layer (HVL), Mean Free Path (MFP) and Radiation Protection Efficiency (RPE), all of which proved that adding nano-Bi2O3 ratios of SR produces higher shielding efficiency than its micro counterpart.

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“…the thickness needed to reduce the initial intensity to its tenth value and can be estimated from the following equation [34][35][36]:…”

Section: Sem Resultsmentioning

confidence: 99%

Section: Shielding Propertiesmentioning

confidence: 99%

The Influence of Bi2O3 Nanoparticle Content on the γ-ray Interaction Parameters of Silicon Rubber

et al. 2022

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“…The radiation absorption ratio (RAR) is an useful quantity for estimating the efficacy of shielding materials and given by Equation ( 4) [31][32][33][34].…”

Section: Methodsmentioning

confidence: 99%

A Study on the Gamma Radiation Protection Effectiveness of Nano/Micro-MgO-Reinforced Novel Silicon Rubber for Medical Applications

et al. 2022

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In this work, we examined novel polymer composites for use in radiation protection applications. These prepared polymers are non-toxic compared with lead and show potential to be used as protective gear in different medical applications where low-energy photons are utilized. We prepared silicon rubber (SR) with different concentrations of micro- and nano-sized MgO. We used a HPGe detector to measure radiation attenuation factors at different photon energies, ranging from 59.6 to 1333 keV. We reported the effect of particle size on the attenuation parameters and found that the linear attenuation factors for SR with nano-MgO were higher than for SR with micro-MgO. The mean free path (MFP) for pure SR and SR with micro- and nano-sized MgO were determined, and we found that silicon rubber with MgO (both micro- and nano-sized) has a lower MFP than pure SR. The linear attenuation coefficient results show the importance of using SR with high MgO content for low-energy radiation protection applications. Moreover, the half-value layer (HVL) results demonstrate that we need a certain thickness of SR with nano-MgO to effectively reduce the intensity of the low-energy photons.

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“…The sample was placed between the source and the detector as shown in Figure 3 and the measurement was done for a sufficient time so that the statistical uncertainty of the area under the peak was less than 1% and the counting rate was calculated in the presence and absence of the sample. The MAC is calculated according to the following equation [28][29][30]:…”

Section: Methodsmentioning

confidence: 99%

Investigation of Photon Radiation Attenuation Capability of Different Clay Materials

et al. 2021

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This work aims to experimentally report the radiation attenuation factors for four different clays (red, ball, kaolin and bentonite clays) at four selected energies (emitted from Am-241, Cs-137, and Co-60). The highest relative difference in the mass attenuation coefficient (MAC) is equal to −3.02%, but most of the other results are much smaller than this value, proving that the experimental and theoretical data greatly agree with each other. From the MAC results, the shielding abilities of the clay samples at 0.060 MeV follow the order of: bentonite > red > ball > kaolin. Thus, at low energies, the bentonite clay sample provides the most effective attenuation capability out of the tested clays. The half value layer (HVL) increases as energy increases, which suggests that, only a thin clay sample is needed to sufficiently absorb the radiation at low energies, while at higher energies a thicker sample is needed to shield the same amount of high energy radiated. Furthermore, bentonite clay has the lowest HVL, while the kaolin clay has the greatest HVL at all energies. The radiation protection efficiency (RPE) values at 0.060 MeV are equal to 97.982%, 97.137%, 94.242%, and 93.583% for bentonite clay, red clay, ball clay, and kaolin clay, respectively. This reveals that at this energy, the four clay samples can absorb almost all of the incoming photons, but the bentonite clay has the greatest attenuation capability at this energy, while kaolin clay has the lowest.

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A novel CaO–K2O–Na2O–P2O5 glass systems for radiation shielding applications

Cited by 51 publications

References 54 publications

The Influence of Bi2O3 Nanoparticle Content on the γ-ray Interaction Parameters of Silicon Rubber

The Influence of Bi2O3 Nanoparticle Content on the γ-ray Interaction Parameters of Silicon Rubber

A Study on the Gamma Radiation Protection Effectiveness of Nano/Micro-MgO-Reinforced Novel Silicon Rubber for Medical Applications

Investigation of Photon Radiation Attenuation Capability of Different Clay Materials

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