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标题：Radioactivity and gamma ray spectrometry of basement rocks in Okene area, southwestern Nigeria
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作者：M. A. Adabanija ; O.N. Anie ; M. A. Oladunjoye 等
期刊名称：NRIAG Journal of Astronomy and Geophysics
印刷版ISSN：2090-9977
电子版ISSN：2090-9985
出版年度：2020
卷号：9
期号：1
页码：71-84
DOI：10.1080/20909977.2020.1711695
语种：English
出版社：Elsevier
摘要：Abundant outcrops of crystalline rocks in the Okene area, southwestern Nigeria, suggest exposure of the inhabitants to gamma radiation. The power generation of the nation also remains a far cry from the required 20,000 MW, thus necessitating the need for alternative power supply. Therefore, the background radiation level and radiogenic heat potential of crystalline basement rocks in Okene were investigated using gamma ray spectrometry. This was accomplished by analysing 19 rock samples of different lithologies, namely banded gneiss, granite, charnockite, biotite granite, pegmatite and schist, collected from different locations of the Okene area for analysis which involved determining the concentration of U-238, Th-232 and K-40 radionuclides using a Canberra S100 multi-channel analyser with NaI(Tl) detector.
关键词：Gamma ray spectrometry;radiogenic heat potential;crystalline basement rocks