Assessment of Intercomparison of Radionuclide Activity Measurement between P3KRBiN-BATAN and NMIJ/AIST-JAPAN

On every radionuclide activity measurements or any measurements always contain uncertainties. The uncertainties come from standard source, equipment to be used, condition of measurements (background) and sample (measurement). Those elements should be taken into account in the measurement result evaluation. To know the result of activity measurement was in a good agreement or not, it can be done by intercomparison. A good result of a measurement if it was nearly with the result of international/primary laboratories measurements such as System Internationale de Reference (SIR)-Franch, National Metrology Institute of Japan- Advanced Industrial Science and Technology (NMIJ/AIST or Physikalisch Technische Bundes-anstalt (PTB) and the absolute value of En should be less than 1. The result of intercomparison between Center for Research and Development of Radiation Safety and Nuclear Biomedicine (P3KRBiN) -BATAN and NMIJ/AIST were in a good agreement for activity measurement of 125I (En=0.193), 58Co(En=0.503), 88Y(En=0.035) and 59Fe(En=0.632), by using gamma spectrometry counting system (HPGe detector) and 166mHo(En=0.492), by using Merlin Gerin Ionization chamber. (author)