Experimental investigation of γ-ray attenuation in Jordanian building materials using HPGe-spectrometer
Experimental investigation of γ-ray attenuation in Jordanian building materials using HPGe-spectrometer
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DOI：
10.1016/j.jenvrad.2006.12.015
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发表时间：
2007-01-01
影响因子：
2.3
通讯作者：
Imran, Mousa M. A.
中科院分区：
文献类型：
--
作者：
Awadallah, Mohammad I.;Imran, Mousa M. A.
对约旦使用的一些建筑材料衰减伽马辐射的能力进行了测试。用高纯锗谱仪测量了石灰石、砖和混凝土的衰减系数。使用窄束技术，具有不同能量线的多个伽马辐射源。结果表明，所有石灰石样品的衰减系数的变化，在相同的能量线，是在实验的不确定性。在此基础上，提出了计算不同入射能量下衰减的经验公式μ（m）=AE（-0.44）。平均厚度为7厘米的石灰石被发现可以阻止75%的能量为662 keV的伽马射线，而有效厚度为7厘米的砖被发现可以阻止60%的相同射线。在1333 keV处计算的混凝土的总衰减系数为11.2m（-1），小于石灰石和砖。(C)2007爱思唯尔有限公司保留所有权利。
The capabilities of some building materials used in Jordan to attenuate gamma radiation were tested. Measurements of the attenuation coefficients of limestone, bricks and concrete have been carried out using a HPGe-spectrometer. Narrow beam technique was used, with a multiple gamma radiation source of different energy lines. Results indicate that variations in the attenuation coefficient for all limestone samples, at the same energy line, are within the experimental uncertainties. On the basis of the results achieved, an empirical formula mu(m) =AE(-0.44) was proposed to calculate attenuation at various incident energies. Limestone of average thickness 7 cm was found to stop 75% of a gamma beam of energy 662 keV Meanwhile a brick of effective thickness 7 cm was found to stop 60% of the same beam. The total attenuation coefficient of concrete calculated at 1333 keV was 11.2 m(-1), which is less than that of limestone and bricks. (C) 2007 Elsevier Ltd. All rights reserved.