The TDCR method for activity standardization in liquid scintillation counting

Yunxia Lan; Minyao Li; Zhangzhi Wang

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The TDCR method for activity standardization in liquid scintillation counting

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- The TDCR method for activity standardization in liquid scintillation counting
- Nuclear Techniques Vol. 09, Issue 5, (1986)
- 作者机构：
  
  中国科学院上海原子核研究所
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：21 November 1985，
  
  Published：1986-05
- 稿件说明：
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Yunxia Lan, Minyao Li, Zhangzhi Wang. The TDCR method for activity standardization in liquid scintillation counting[J]. Nuclear techniques, 1986, 09(5): 1-7,58.
DOI：

Yunxia Lan, Minyao Li, Zhangzhi Wang. The TDCR method for activity standardization in liquid scintillation counting[J]. Nuclear techniques, 1986, 09(5): 1-7,58. DOI：

摘要

本文描述液体闪烁计数中放射性活度标准化的一种新方法。该方法以三重对两重符合计数率之比（TDCR）作为效率变化的参量，外推符合计数率曲线到TDCR=1，直接地得出样品活度的接近值。文中给出它的原理、效率计算和理论不确定度估计。对氚水的测量，在NBS标称值的总测量不确定度±0.63%内一致。

Abstract

A new method for radioactivity standardization in liquid scintillation counting was described. In the method a triple to double coincidence ratio was taken for a reference quantity of efficiency change and the coincidence counting was extrapolated to the value of TDCR=1

thus may lead to an approximate value for the sample activity directly.

This paper shows the principle of the method

the efficiency calculation and the estimate of the uncertainty. The measured result for tritiated water coincides with the nominal value of the NBS standard within an uncertainty of ±0.63%.

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Keywords

references

K. Pochwalski et al . , Rep. Inst. Nucl. Res., Swierk, 1848/OPiDI/E/A , 1979 .

A. Williams et al . , Nuct. Instr. Meth. , 112 , 131 ( 1973 ).

J. B. Birks , Phys. Rev. , 84 , 364 ( 1951 ).

P. W. Benjamin et al . , AWRE Report NR/A -2/62 ( 1962 ).

H. Houtermans , Nucl. Instr. Meth. , 112 , 121 ( 1973 ).

J. Mantel , Int. J. Appl. Radiat. Isotopes , 23 , 9 , 407 ( 1972 ).

王章智等，液体闪烁核活度计量仪，核技术，待发表 .

D. Smith , Nuсl. Instr. Meth. , 152 , 505 ( 1978 ).

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