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Development of a High-Efficiency 4 \pi\beta (LS)– \gamma Coincidence System for Direct Measurements of Activity in Radioactive Decay

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4 Author(s)
Lee, K.B. ; Korea Res. Inst. of Stand. & Sci., Daejeon, South Korea ; Jong Man Lee ; Tae Soon Park ; Sang Han Lee

We developed a new 4πβ (LS)-γ coincidence counting system to be used for radionuclide standardization. The liquid scintillation detector used in this system enables the easy preparation of sources without self-absorption. A special β- β coincidence technique is implemented to suppress large thermal and electronic noises, resulting in a higher coincidence efficiency and reduced uncertainty in the measurements of low-energy beta-emitting radionuclides. The system is commissioned with the activity measurement of 60Co. The measured activity is derived with 90% efficiency for the β-ray detection.

Published in:

Nuclear Science, IEEE Transactions on  (Volume:57 ,  Issue: 5 )

Date of Publication:

Oct. 2010

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