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Shielding behavior of artisanal bricks against ionizing photons.
Applied Radiation and Isotopes ( IF 1.6 ) Pub Date : 2020-04-02 , DOI: 10.1016/j.apradiso.2020.109167
L A Escalera-Velasco 1 , J R Molina-Contreras 1 , C G Hernández-Murillo 2 , H A De León-Martínez 1 , H R Vega-Carrillo 3 , J A Rodríguez-Rodríguez 4 , I A López-Salas 1
Affiliation  

In the work reported in this article, were determined the shielding capabilities of three artisanal bricks used massively in the construction industry in Mexico. The linear attenuation coefficients for photons between 1 keV and 100 GeV are reported; and the half-value layers for energies used in the medical field, show that the three typical artisanal bricks have good shielding capabilities for photons below 50 keV. We compared the effective atomic numbers of one of our bricks against two widely used materials in the construction industry, and our results suggest that the greater the effective atomic number, the less material attenuation capacity. A comparison of the half-value layer of one of our bricks against the half-value layers of two clay bricks with different percentages of fly ash particles published in the literature, suggests that in the region between 0.001 and 2.8 MeV, all the three bricks have practically the same attenuation capacity and that from 2.8 MeV to 100 GeV the clay bricks with different percentages of fly ash particles, need less material to show the same attenuation capacity than our artisanal bricks. Energy Dispersed X-Ray Fluorescence suggests that regardless of the number of constituent elements in a sample, a critical mass per atom is required to have a positive impact on density; and as a consequence, in the capacity of attenuation of the materials. Normalized half-value layers suggest on the other hand, that the uncooked bricks have better shielding capabilities than cooked.



中文翻译:

手工砖对电离光子的屏蔽行为。

在本文报道的工作中,确定了在墨西哥建筑业中大量使用的三种手工砖的屏蔽能力。报告了在1 keV和100 GeV之间的光子的线性衰减系数;以及用于医疗领域的能量的半值层表明,三种典型的手工砖对于50 keV以下的光子具有良好的屏蔽能力。我们将一种砖的有效原子序数与建筑业中两种广泛使用的材料进行了比较,结果表明,有效原子序数越大,材料的衰减能力越小。我们将其中一种砖的半价层与两种粉煤灰颗粒百分比不同的两种粘土砖的半价层进行了比较,表明在0.001和2.8 MeV之间的区域中,这三块砖都具有几乎相同的衰减能力,而从2.8 MeV到100 GeV的粉煤灰颗粒百分比不同的粘土砖所需的材料要少于相同的衰减能力。我们的手工砖。能量分散的X射线荧光表明,不管样品中的构成元素有多少,每个原子的临界质量都必须对密度产生积极的影响。结果,降低了材料的衰减能力。另一方面,归一化的半值层表明,未煮过的砖比煮过的砖具有更好的屏蔽能力。8 MeV到100 GeV的粉煤灰颗粒百分比不同的粘土砖,与我们的手工砖相比,需要更少的材料来显示相同​​的衰减能力。能量分散的X射线荧光表明,不管样品中的构成元素有多少,每个原子的临界质量都必须对密度产生积极的影响。结果,降低了材料的衰减能力。另一方面,归一化的半值层表明,未煮过的砖比煮过的砖具有更好的屏蔽能力。8 MeV到100 GeV的粉煤灰颗粒百分比不同的粘土砖,与我们的手工砖相比,需要更少的材料来显示相同​​的衰减能力。能量分散X射线荧光表明,无论样品中的构成元素有多少,都需要每个原子的临界质量才能对密度产生积极影响。结果,降低了材料的衰减能力。另一方面,归一化的半值层表明,未煮过的砖比煮熟的砖具有更好的屏蔽能力。结果,降低了材料的衰减能力。另一方面,归一化的半值层表明,未煮过的砖比煮过的砖具有更好的屏蔽能力。结果,降低了材料的衰减能力。另一方面,归一化的半值层表明,未煮过的砖比煮过的砖具有更好的屏蔽能力。

更新日期:2020-04-02
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