The Application of LaBr3（Ce） Gamma Radiation Scintillation Spectrometer to Direct Determination of Uranium Content of Uranium Ore Bodies
详细信息
- 责任者：Wu Yongpeng (Department of Engineering Physics ; Tsinghua University ; Beijing 100084 ; China) ; Tang Bin
- 刊名：Geophysical and Geochemical Exploration
- 出版年：2012
- 卷期：36(3)
- 关键词：铀矿 ; uranium ores ; 伽玛能谱测量 ; gamma-spectrometry
- 页码：p.414-417
- 图表：1 illus., 2 tables, 8 refs.
- 分类号：1600
- issnNo：ISSN1000-8918
- isbnNo：CN11-1906/P
摘要
Lanthanum bromide scintillator,namely LaBr3(Ce),is a new detector which has excellent comprehensive performance for detecting gamma-ray.However,LaBr3(Ce) detector fails to measure the fine structure of gamma-ray spectrum from the uranium-bearing ore body for its limited energy resolution,and the spectrum measured doesn’t show the characteristic peaks which are directly related to uranium content.Under such circumstances,the development of a technique which can determine uranium content directly is necessary.The authors measured a series of hard rock radionuclide-bearing ore bodies using a LaBr3(Ce) probe made in China,and determined uranium content directly by relative analysis combining energy window with linear regression based on 234Pam,1.001 MeV characteristic energy and,as a result,obtained satisfactory results,which show that the relative error is less than 10.0% for uranium content over 99×10-6,and the error is less than 8.5% for other main radionuclides.
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