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首页> 外文期刊>Applied radiation and isotopes: including data, instrumentation and methods for use in agriculture, industry and medicine >Determination of Uranium and Thorium in Egyptian Monazite by Gamma-Ray Spectrometry
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Determination of Uranium and Thorium in Egyptian Monazite by Gamma-Ray Spectrometry

机译：伽玛射线光谱法测定埃及独居石中的铀和Thor

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摘要

A sample of pure monazite prepared from beach sands, from the Abu-Khashaba area near Rosetta, has been investigated by means of passive and active measurement techniques. The natural gamma-rays emitted from the sample under investigation as well as those emitted following neutron activation are measured. The sample and the standards used were prepared and simultaneously irradiated in a neutron flux of the order 10↑(3) n cm↑(-2) s↑(-1) using the Egyptian Research Reactor-I (ET-RR-I). The spectrometry facilities of the nuclear physics laboratories, specifically, the hyper-pure germanium detection systems and some special computer programs, were used for the measurements. The gamma-ray peaks at 270.2, 583.1, 911.2, 968.8 and 2204.2 keV for thorium and uranium daughters in passive measurements and the gamma-ray peaks at 311.8 and 277.6 keV for active measurements are used for estimation of thorium and uranium concentration values. The values obtained were between 46 ± 2 and 59 ± 3 ppm and 687 ± 34 and 729 ± 36 ppm for uranium and thorium, respectively. Copyright # 1997 Elsevier Science Ltd
机译：已通过被动和主动测量技术研究了从罗塞塔附近阿布哈卡巴地区的沙滩沙子制备的纯独居石样品。测量从研究中的样品发出的自然伽马射线以及中子活化后发出的自然伽马射线。准备并使用埃及研究堆I（ET-RR-I）以10↑（3）n cm↑（-2）s↑（-1）级的中子通量同时照射样品和使用的标准溶液。 。测量使用了核物理实验室的光谱测定设备，特别是超纯锗检测系统和一些特殊的计算机程序。 passive和铀子体在被动测量中的伽马射线峰在270.2、583.1、911.2、968.8和2204.2 keV，主动测量在311.8和277.6 keV在伽马射线峰用于估算and和铀的浓度值。对于铀和th，获得的值分别在46±2和59±3 ppm和687±34和729±36 ppm之间。版权所有©1997 Elsevier Science Ltd

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