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Variations in radioactivity of phosphate rocks from different sites in Central Eastern Desert of Upper Egypt
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作者 AMEl-Arabi ammyousef 《Nuclear Science and Techniques》 SCIE CAS CSCD 2002年第4期193-201,共9页
Natural radionuclides in the phosphate rock samples collected from Wadi Batur,Wadi Hegaza and Gabal Abu Had at Eastern Desert were determined using a high resolution γ-ray spectrometer.The experimental results concer... Natural radionuclides in the phosphate rock samples collected from Wadi Batur,Wadi Hegaza and Gabal Abu Had at Eastern Desert were determined using a high resolution γ-ray spectrometer.The experimental results concerning ^226Ra,232Th and their daughters are presented.Analyses of the measured spectra show that ^226Ra is distinguished with remarkable activities with average values ranging from 22.4 to 558Bq/kg,while ^232Th activity concentration is in the range of 9.7 to 92.8Bq/kg.The results of the analyses were found to be in a good agreement with the data obtained by others. 展开更多
关键词 磷酸岩 天然放射性核素 226RA ^232Th
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