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Standardization of 110mAg by liquid scintillation and 4pibeta-gamma coincidence counting
Garcia-Torano1, Roteta, Rodriguez Barquero L
1Metrologia de Radiaciones Ionizantes, CIEMAT, Madrid, Spain. e.garciatorano@ciemat.es
Abstract:
The nuclide 110Ag is a beta-gamma emitter with a very complex decay scheme, including more than 50 gamma-rays. It has been standardized by two methods: liquid scintillation counting (LSC) and 4pibeta(pc)-gamma coincidence measurements. In the LSC measurements the CIEMAT/NIST method was used, with 3H being used as a tracer for efficiency calculations. In the 4pibeta(pc)-gamma standardization, Monte Carlo calculations have been made to determine the optimal measurement conditions. Results obtained with both methods for the activity concentration of the solution are in good agreement.