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^(60)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。
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.
出处
《核技术》
CAS
CSCD
北大核心
1991年第4期228-233,共6页
Nuclear Techniques
