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Standardisation of ⁶⁴Cu using a software coincidence counting system
Miroslav Havelka1, Jana Sochorová1
1Czech Metrology Institute, Inspectorate for Ionizing Radiation, Radiová 1, 102 00 Prague, Czech Republic.
Abstract:
The activity of the radionuclide (64)Cu was determined by the efficiency extrapolation method applied to 4π(PC)-γ coincidence counting. The standardisation was performed by software coincidence counting-a digital method for primary activity measurement that simplifies the setting of optimal coincidence parameters. The γ-ray-energy window, characterised by identical gamma detection efficiency related to the sum of EC and to the sum of beta decay branches, was found. This setting ensured a linear and zero slope extrapolation curve.
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