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JIN HUIMIN;AI DAZHI;XIA YIHUA;WANG XIN Institute of Atomic Energy, P. O. Box 275, Beijing. ON-LINE MEASUREMENT OF LOW-LEVEL γ RADIOACTIVITY IN LARGE-VOLUME WATER USING NaI(T1) DETECTOR[J]. Atomic Energy Science and Technology, 1989, 23(1): 20-20. DOI: 10.7538/yzk.1989.23.01.0020
Citation: JIN HUIMIN;AI DAZHI;XIA YIHUA;WANG XIN Institute of Atomic Energy, P. O. Box 275, Beijing. ON-LINE MEASUREMENT OF LOW-LEVEL γ RADIOACTIVITY IN LARGE-VOLUME WATER USING NaI(T1) DETECTOR[J]. Atomic Energy Science and Technology, 1989, 23(1): 20-20. DOI: 10.7538/yzk.1989.23.01.0020
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ON-LINE MEASUREMENT OF LOW-LEVEL γ RADIOACTIVITY IN LARGE-VOLUME WATER USING NaI(T1) DETECTOR

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  • The paper presents a method for on-line measurement of low-level γ radioactivity in large-volume effleunt water. The detection effeciency for liquid source of ~(40)K and point sources (~(60)Co, ~(137)Cs) are determined. Feasibility study shows that a volume about 1 m~3 of monitoring pool for φ 100×100 mm NaI (T1) detector is acceptable. The minimum specific activity that can be detected would be better than 9.2×10~2 Bq/m~3. It looks necessary to bubble out the radon gas in industrial. effleunt before the measurement.
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