Shielding capabilities study of light-gray, pale-pink and orange-pink Zacatecan quarries against ionizing photons using EDXRF and XCOM code

León-Martínez, Héctor Asael De; Molina-Contreras, J.R.; Escalera-Velasco, Luis Alberto; Hernández-Murillo, Christian Geovanni; Vega‐Carrillo, Héctor René; Rodríguez-Rodríguez, José Antonio

doi:10.1016/j.pnucene.2020.103287

Cited by 9 publications

(4 citation statements)

References 29 publications

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“…These materials are abundant in various quantities across the study area. Therefore, there is always a need to develop new and improved materials that can be used under potential harsh conditions of radiation exposure and act as shielding materials for extended periods of time 15 – 17 .…”

Section: Introductionmentioning

confidence: 99%

Investigation of natural radionuclides and radiation shielding potential of some commonly used building materials in Northwestern Nigeria

Garba,

Aliyu,

Rabiu

et al. 2024

Sci Rep

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This study assessed the gamma-ray shielding potential of clay, sand, gypsum and kaolin commonly used as a building material in Northwestern, Nigeria. The radiological status of the samples was first evaluated by determining the activity concentrations of 238U, 232Th and 40K using NaI (Tl) detector after which elemental composition and mass density were determined using Neutron Activation Analytical Technique. After which the mass attenuation coefficients (MAC), linear attenuation coefficients (LAC), half value layer (HVL), tenth value layer (TVL), and effective atomic number (Zeff) were determined experimentally and theoretically using standard point sources of 137Cs and 60Co photon peaks (0.662 and 1.332, 1.173) MeV and Py-MLBUF software. The activity concentrations were found to range from 51 to 59 Bq kg−1 with a mean value of 59 Bq kg−1 for 238U, 24 to 27 Bq kg−1 with a mean value of 29 Bq kg−1 for 232Th, and 219 to 247 Bq kg−1 with a mean value of 247 Bq kg−1 for 40K which were about within the world recommended values of 33, 45 and 420 Bq kg−1 respectively. The results of the elemental compositions show that Si, Al, K, Fe, and Ba in clay and sand samples have concentrations in the range of 36.83–78.48%, 1.92–26.05%, 6.33–21.96%, 2.39–19.09%, and 0.09–1.44%, respectively, while in kaolin and gypsum, results revealed that Si, Al, K, Fe, and Ca range between 0.34 and 65.52%, 1.14–35.82%, 0.00–12.12%, 0.00–5.77%, and 0.00–96.6%, respectively. However, the concentrations of other elements such as Mg, Ti, Mn, Zn, Na, and Ba varied significantly with the samples. The results showed that clay has an average density of 1.96 g/cm3, sand has 2.32 g/cm3, kaolin has 2.63 g/cm3, and gypsum has the highest density with a value of 2.66 g/cm3 compared to other samples. During the measurements, a thallium-activated sodium-iodide NaI (TI) detector was used. A narrow beam transmission geometry condition was adopted for the measurements to ensure minimal scattered radiation. Absorption and attenuation of gamma beams as a function of sample thickness against gamma energy generally exhibit an increasing gamma ray behaviour as the sample thickness increases from 1 to 3 cm. The results showed that the gypsum, kaolin, sand, and clay were capable of attenuating 63.5%, 61.5%, 58.4%, and 44.2 of gamma-ray photons of energy 0.662 MeV at 3 cm thickness %, respectively, and 40.6%, 32.9%, 30.6%, and 27.3% of gamma energy 1.332 MeV at 3 cm thickness, respectively. The results showed that MAC, LAC, and Zeff of all the samples decreased with an increase in photon energy, while those of HVL and TVL increased. The experimental results for all the gamma-ray shielding parameters were found to be in good agreement with the theoretical values obtained using Py-MLBUF. The results have shown that all the samples have similar photon attenuation behaviours; however, gypsum has the best shielding potential than kaolin and this is attributed due to its highest density value.

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Section: Introductionmentioning

confidence: 99%

Investigation of natural radionuclides and radiation shielding potential of some commonly used building materials in Northwestern Nigeria

Garba,

Aliyu,

Rabiu

et al. 2024

Sci Rep

View full text Add to dashboard Cite

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“…15 This makes demand for leaded polymer composites to keep reducing while the need for lead-free composites keep increasing because evidence have shown that lead free polymer composites can equally replace leaded composites. 15,16 Concrete is commonly used in the construction of radiological diagnostic facilities, [17][18][19] however, it is prone to cracks 17 and very heavy to manipulate during construction. Meanwhile, polymer composites are less prone to cracks and lighter than concrete giving it an advantage over concrete during construction because of the ease of manipulation.…”

Section: Introductionmentioning

confidence: 99%

“…Concrete is commonly used in the construction of radiological diagnostic facilities, 17–19 however, it is prone to cracks 17 and very heavy to manipulate during construction. Meanwhile, polymer composites are less prone to cracks and lighter than concrete giving it an advantage over concrete during construction because of the ease of manipulation 20 …”

Section: Introductionmentioning

confidence: 99%

The use of low‐density polyethylene‐molybdenum oxide polymer composites as radiation shielding laminates in dental radiology physical structures

Alyousef,

Tijani,

Alsuhybani

et al. 2023

J of Applied Polymer Sci

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Radiation protection is crucial in the protection of humans from the harmful effects of ionizing radiation. One of the most reliable ways of reducing the risk of occupationally exposed workers and the public in dental radiology is the installation of an effective radiation shielding barrier at the facility. Concrete barriers are predominantly used for dental shielding, however there is need to consider the use of lighter, ready‐made, and lower half value layer (HVL) materials as shielding materials in dental radiology facilities. In this work, low‐density polyethylene‐molybdenum oxide polymer composites were prepared (85C2H4‐15MoO3, 90C2H4‐10MoO3, and 95C2H4‐5MoO3), and the radiation attenuation measurements were carried out experimentally. The composites displayed acceptable x‐ray absorbing capabilities. 85C2H4‐15MoO3 polymer composite (DT1) showed optimal shielding in comparison with concrete. DT1 has an approximate HVL like concrete while it is 54.3% lighter than concrete. 85C2H4‐15MoO3 polymer composite is 1.5%, 0.8%, and 6.3% higher in linear attenuation coefficient than concrete at 60, 70, and 80 kVps, respectively. This implies that DT1 can effectively replace concrete at dental diagnostic energies.

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“…Since one of the main concrete components is aggregate, radiation shielding properties of concrete can be controlled by choice of proper normal-or heavy-weight [8][9][10] aggregate type. It is an inexpensive material with a high potential for incorporating a great variety of wastes and secondary raw materials [11][12][13]. In this regard, extensive research is being conducted in order to replace potentially harmful lead-incorporated cementitious composites with environmentally friendly metal oxides such as Bi2O3 [14][15][16], Fe2O3/Fe3O4 [17][18][19] or TiO2 [20].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the effects of bismuth oxide (Bi2O3) micro and nanoparticles on the mechanical, microstructural and γ-ray/neutron shielding properties of Portland cement pastes

Sikora

El-Khayatt

Saudi

et al. 2021

Construction and Building Materials

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Shielding capabilities study of light-gray, pale-pink and orange-pink Zacatecan quarries against ionizing photons using EDXRF and XCOM code

Cited by 9 publications

References 29 publications

Investigation of natural radionuclides and radiation shielding potential of some commonly used building materials in Northwestern Nigeria

Investigation of natural radionuclides and radiation shielding potential of some commonly used building materials in Northwestern Nigeria

The use of low‐density polyethylene‐molybdenum oxide polymer composites as radiation shielding laminates in dental radiology physical structures

Evaluation of the effects of bismuth oxide (Bi2O3) micro and nanoparticles on the mechanical, microstructural and γ-ray/neutron shielding properties of Portland cement pastes

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