title: Standardisation of ⁶⁴Cu using a software coincidence counting system.
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.
authors: Czech Metrology Institute, Inspectorate for Ionizing Radiation, Radiová 1, 102 00 Prague, Czech Republic. Electronic address: mhavelka@cmi.cz.
authors: Miroslav
authors: M
authors: Havelka
authors: Czech Metrology Institute, Inspectorate for Ionizing Radiation, Radiová 1, 102 00 Prague, Czech Republic.
authors: Jana
authors: J
authors: Sochorová
keywords: (64)Cu standardisation; 4πβ−γ Coincidence counting; Software coincidence counting