Laboratory application of NaI(Tl) γ-ray spectrometry to studies of natural radioactivity in geophysics
详细信息 查看全文
- 作者：Chiozzi ; P. ; De Felice ; P. ; Fazio ; A. ; Pasquale ; V. ; Verdoya ; M.
- 关键词：Scintillation spectrometry ; Calibration procedure ; Radon effect ; Secular equilibrium
- 刊名：Applied Radiation and Isotopes
- 出版年：2000
- 出版时间：July 15, 2000
- 年：2000
- 卷：53
- 期：1-2
- 页码：127-132
- 全文大小：128 K
文摘
We implemented a laboratory apparatus based on a NaI(Tl) γ-ray spectrometer for the assessment of naturally occurring radioactive materials. This apparatus is devoted to the quantitative determination of U, Th and K 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 γ-ray spectrometry. A discussion was made on factors restricting the approach based on scintillation spectrometry, such as secular equilibrium and radon encapsulation.