Use of HPGe γ-ray spectrometry to assess the isotopic compositiion of uranium in soils

被引：70

作者：

Papachristodoulou, CA ^{[1
]}

Assimakopoulos, PA ^{[1
]}

Patronis, NE ^{[1
]}

Ioannides, KG ^{[1
]}

机构：

[1] Univ Ioannina, Dept Phys, Phys Nucl Lab, Ioannina 45110, Greece

来源：

JOURNAL OF ENVIRONMENTAL RADIOACTIVITY | 2003年 / 64卷 / 2-3期

关键词：

uranium; isotopic ratio; gamma-ray spectrometry; natural decay series; secular equilibrium;

D O I：

10.1016/S0265-931X(02)00049-8

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Gamma-ray spectrometry was used to determine uranium activity and investigate the presence of depleted uranium in soil samples collected from camping sites of the Greek expeditionary force in Kosovo. Assessment of U-238 concentrations was based on measurements of the 63.3 keV and 92.38 keV emissions of its first daughter nuclide, Th-234. To determine the isotopic ratio of U-238/U-235, secular equilibrium along the two radioactive series was first ensured and thereby the contribution of U-235 under the 186 keV peak was deduced. The uranium activity in the samples varied from 48 to 112 Bq kg(-1), whereas the activity ratio of U-238/U-235 averaged 23.1+/-4.3. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：195 / 203

页数：9

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