A bi4π counting method for activity measurement

Yu Fengqiao Zhou Baoguo Sun Ankang Li Zuoqian

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A bi4π counting method for activity measurement

更新时间：2021-04-20

- A bi4π counting method for activity measurement
- NUCLEAR TECHNIQUES Issue 4, (1991)
- 作者机构：
  
  中国计量科学研究院
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：01 April 1991
- 稿件说明：
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[1]于凤翘,周宝国,孙安康,李作前.测量活度的双4π方法[J].核技术,1991(04):228-233.

Yu Fengqiao Zhou Baoguo Sun Ankang Li Zuoqian. A bi4π counting method for activity measurement[J]. Nuclear techniques, 1991, (4): 228-233.
[1]于凤翘,周宝国,孙安康,李作前.测量活度的双4π方法[J].核技术,1991(04):228-233. DOI：

Yu Fengqiao Zhou Baoguo Sun Ankang Li Zuoqian. A bi4π counting method for activity measurement[J]. Nuclear techniques, 1991, (4): 228-233. DOI：

摘要

本文介绍了一种新的测量放射性活度的计数器及基础测量方法——双4π计数方法。原则上

双4π方法可以对较多的核素进行测量

达到测量不确定度（1σ）为0.03—0.06％的水平。本文用测量

Co核素考验双4π方法

证明了双4π方法的正确性

并轻易达到0.2％。测量结果与4π β-γ符合方法比较

在误差范围内一致。文中最后讨论了双4π方法对百余种常用重要核素中进行测量的应用范围。

Abstract

The bi4π counting method as a new fundamental method of activity measurement is introduced. Suitable for more radionuclides

the method can achieve an accuracy of 0.03-0.6% (1σ in principle. The correctness of this method is verified by the measurements of 60Co sources

and it is found readily to reach an accuracy of 0.2% . The results are compared with those obtained by the 4πβ-γ coincident method

and both are in agreement within-the measurement error. Finally

the range of application for this method is also discussed.

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