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WANG Guo jun,LU Xiao xia,WANG Jian qing,CHEN Xi lin,YU Yi guang (China Institute of Atomic Energy,P.O.Box 275 20,Beijing 102413,China). Absolute Radioactivity Measurement of ~(60)Co and ~(134)Cs by 4πβ-γ Anti-coincidence Method[J]. Atomic Energy Science and Technology, 2002, 36(1): 39-39. DOI: 10.7538/yzk.2002.36.01.0039
Citation: WANG Guo jun,LU Xiao xia,WANG Jian qing,CHEN Xi lin,YU Yi guang (China Institute of Atomic Energy,P.O.Box 275 20,Beijing 102413,China). Absolute Radioactivity Measurement of ~(60)Co and ~(134)Cs by 4πβ-γ Anti-coincidence Method[J]. Atomic Energy Science and Technology, 2002, 36(1): 39-39. DOI: 10.7538/yzk.2002.36.01.0039
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Absolute Radioactivity Measurement of ~(60)Co and ~(134)Cs by 4πβ-γ Anti-coincidence Method

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  • A 4πβ γ anti coincidence system is developed for absolute radioactivity measurement.In this system,a dual ADC live time HPGe γ spectroscopy is used as the γ ray detector,and a 4πβ proportional counter is employed for the β detector. The activities of 60 Co and 134 Cs are measured by this system. The combined standard uncertainty of 60 Co and 134 Cs is 0.24% and 0.33%,respectively. The results are compared with that from 4πβ γ coincidence counting system of NIM and CIAE and the agreement of these results is satisfactory.
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