Laboratory application of NaI(Tl) γ-ray spectrometry to studies of natural radioactivity in geophysics

被引:81
作者
Chiozzi, P
De Felice, P
Fazio, A
Pasquale, V
Verdoya, M
机构
[1] Univ Genoa, Dipartimento Studio Terr & Risorse, Settore Geofis, I-16132 Genoa, Italy
[2] Ctr Ric Casaccia, ENEA, Inst Nazl Metrol Radiaz Ionizzanti, Dipartimento Ambiente, I-00100 Rome, Italy
关键词
scintillation spectrometry; calibration procedure; radon effect; secular equilibrium;
D O I
10.1016/S0969-8043(00)00123-8
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
We implemented a laboratory apparatus based on a NaI(TI) gamma-ray spectrometer for the assessment of naturally occurring radioactive materials. This apparatus is devoted to the quantitative determination of U, Th and R in rock and soil samples. We analysed the calibration procedures with particular emphasis to factors which affect accuracy and detection limits. A first series of measurements were compared to those obtained by means of high energy gamma-ray spectrometry. A discussion was made on factors restricting the approach based on scintillation spectrometry, such as secular equilibrium and radon encapsulation. (C) 2000 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:127 / 132
页数:6
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