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|Title:||BIPM Comparison BIPM.RI(II)-K1.Np-237 of Activity Measurements of the Radionuclide 237Np and Links for the 1998 Regional Comparison EUROMET.RI(II)-K2.Np-237|
|Authors:||RATEL G.; MICHOTTE C.; JANSSEN H.; KOSSERT K.; SIBBENS GOEDELE; ALTZITZOGLOU TIMOTHEOS; POMME STEFAAN; WOODS M.j.; JUDGE S.|
|Citation:||METROLOGIA vol. 44 p. 1-16|
|Publisher:||BUREAU INT POIDS MESURES|
|Type:||Articles in periodicals and books|
|Abstract:||In 1998, five national metrology institutes (NMI), an international laboratory and the Bureau International des Poids et Mesures (BIPM) took part in a comparison of activity measurements of 237Np as part of the EUROMET project No 416 comparison identifier EUROMET.RI(II)-K2.Np-237. The nominal activity per mass of the 237Np solution distributed was 150 kBq g-1. The three ampoules received by the BIPM for this comparison were also measured in the International Reference System (SIR) for activity comparison at the BIPM (identifier BIPM.RI(II)-K1.Np-237). Two other participants to the EUROMET comparison also submitted ampoules of the same 237Np solution to the SIR. These SIR measurements enable the EUROMET comparison to be linked to the BIPM.RI(II)-K1.Np-237. The degrees of equivalence between each laboratory and the key comparison reference value (KCRV) have been calculated and the results are given in the form of a graph and matrix for the three SIR participants and four other NMIs from the EUROMET comparison.|
|JRC Institute:||Institute for Reference Materials and Measurements|
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