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GUO Xiaoqing, WANG Jianqing, YAO Shunhe. Activity Measurement of 60Co，134Cs by Using 4πβ-4πγ Sum Efficiency Extrapolation Method[J]. Atomic Energy Science and Technology, 2009, 43(4): 1-327. DOI: 10.7538/yzk.2009.43.04.0300
Citation: GUO Xiaoqing, WANG Jianqing, YAO Shunhe. Activity Measurement of 60Co，134Cs by Using 4πβ-4πγ Sum Efficiency Extrapolation Method[J]. Atomic Energy Science and Technology, 2009, 43(4): 1-327. DOI: 10.7538/yzk.2009.43.04.0300
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Activity Measurement of 60Co，134Cs by Using 4πβ-4πγ Sum Efficiency Extrapolation Method

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  • A 4πβ-4πγ detector configuration with a 4πβ （PC） flow proportional counter and a large size welltype 4πγ NaI(Tl) crystal was described, and the theoretic function of sum efficiency extrapolation was established. The radioactivities of60Co and 134Cs source were measured using this sum extrapolation method, 0.29% and 0.19% relative uncertainty obtained for each, and the result was compared with the value of coincidence efficiency extrapolation. The analysis indicates this method is fit for measuring the activity of complex decay nuclides.
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