Abstract
Since 1978, five national metrology institutes and one other laboratory have submitted eight samples of known activity of 144Ce to the International Reference System (SIR) for activity comparison at the Bureau International des Poids et Mesures. The activities ranged from about 2 MBq to 8 MBq. The degrees of equivalence between each equivalent activity measured in the SIR and the key comparison reference value (KCRV) have been calculated and the results are given in the form of a matrix. A graphical presentation is also given. The results of this comparison have been approved by Section II of the Consultative Committee for Ionizing Radiation (CCRI(II)), comparison identifier BIPM.RI(II)-K1.Ce-144.
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Main text. To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database www.bipm.org/kcdb.
This Final Report has been peer-reviewed and approved for publication by the CCRI(II) according to the provisions of the Mutual Recognition Arrangement (MRA).