Journal
RADIATION PHYSICS AND CHEMISTRY
Volume 140, Issue -, Pages 167-172Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.radphyschem.2017.01.023
Keywords
Terrestrial gamma radiation dose (TGRD); Geological formation; Nal (Ti) detector; Analysis of variance (ANOVA); Isodose map; Jos Plateau
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In-situ measurement of terrestrial gamma radiation dose rates (TGRD) was conducted in northern zone of Jos Plateau and a statistical relationship between the TGRD and the underlying geological formations was investigated. The TGRD rates in all the measurements ranged from 40 to 1265 nGy h(-1) with a mean value of 250 nGy h(-1). The maximum TGDR was recorded on geological type G8 (Younger Granites) at Bisitchi, and the lowest TGDR was recorded on G6 (Basaltic rocks) at Gabia. One way analysis of variance (ANOVA) statistical test was used to compared the data. Significantly, the results of this study inferred a strong relationship between TGRD levels with geological structures of a place. An isodose map was plotted to represent exposure rates due to TGRD. The results of this investigation could be useful for multiple public interest such as evaluating public dose for the area.
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