| 用液体闪烁计数法绝对测量^3H和^14C比活度 |
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| 引用本文： | 翟盛庭.用液体闪烁计数法绝对测量^3H和^14C比活度[J].原子能科学技术,1997,31(6):503-507. |
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| 作者姓名： | 翟盛庭 |
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| 作者单位： | 中国核动力研究设计院 |
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| 摘 要： | 简述了液体闪烁数的单管及双管符合外推方法绝对测量＾３Ｈ、＾１４Ｃ活度的基本原理，零几率校正采用相对探测阈外推法，并提出了近代零几率外推方法，不同方法的测量结果与参考值相比，偏差在０．４－２．０％以内。
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| 关 键 词： | 液体闪烁计数 绝对测量 比活度 氢3 碳14 |
ABSOLUTE MEASUREMENTS OF SPECIFIC ACTIVITY OF 3H AND 14 C BY LIQUID SCINTILLATION COUNTING METHODS |
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| Zhai,Shengting.ABSOLUTE MEASUREMENTS OF SPECIFIC ACTIVITY OF 3H AND 14 C BY LIQUID SCINTILLATION COUNTING METHODS[J].Atomic Energy Science and Technology,1997,31(6):503-507. |
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| Authors: | Zhai Shengting |
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| Abstract: | The basic principles of liquid scintillation counting of single photomultiplier extrapolation method and double photomultipliers coincidence method for absolute measurements of specific activity of 3H and 14 C,are described briefly.The method of relative detection threshold extrapolation was used in correction of non detection probability.The new method of non detection probability extrapolation is put forward. The deviations measured from the reference values of specific activities are in the range of 2% to 0 4% for 3H and 14 C,respectively. |
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| Keywords: | Liquid scintillation counting Absolute measurement 3H 14 C Specific activity |
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