通过液体闪烁符合计数法对基于电子俘获的放射性核素139Ce、125I、192Ir和65Zn进行绝对活度测量。
Absolute activity measurement of the electron-capture-based radionuclides 139Ce, 125I, 192Ir and 65Zn by liquid scintillation coincidence counting.
作者信息
Van Wyngaardt W M, Simpson B R S
机构信息
Radioactivity Standards Laboratory, CSIR NML, 15 Lower Hope Road, Rosebank 7700, Cape Town, South Africa.
出版信息
Appl Radiat Isot. 2006 Oct-Nov;64(10-11):1454-8. doi: 10.1016/j.apradiso.2006.02.061. Epub 2006 Apr 11.
Four radionuclides with electron-capture-based decay schemes have been directly measured by a liquid scintillation coincidence extrapolation technique. 125I, 192Ir and 65Zn were measured as part of international key comparisons held under the auspices of the International Bureau of Weights and Measures (BIPM). The 139Ce measurements formed part of a regional comparison organized by the Asia Pacific Metrology Programme (APMP). Since 139Ce decays purely by electron-capture, the basic method is described for this radionuclide. Results and difficulties encountered are discussed and uncertainty budgets are presented.
利用液体闪烁符合外推技术直接测量了四种具有基于电子俘获衰变方案的放射性核素。作为由国际计量局（BIPM）主持的国际关键比对的一部分，对125I、192Ir和65Zn进行了测量。139Ce的测量是亚太计量规划（APMP）组织的区域比对的一部分。由于139Ce仅通过电子俘获衰变，因此针对该放射性核素描述了基本方法。讨论了所得结果和遇到的困难，并给出了不确定度评定。
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