Since 2009, three national metrology institutes (NMI) have submitted three samples of known activity of 133Ba to the International Reference System (SIR) for activity comparison at the Bureau International des Poids et Mesures (BIPM), with comparison identifier BIPM.RI(II)-K1.Ba-133, to update their earlier result dating more than 15 years ago. The values of the activity submitted were between about 2 MBq and 3 MBq. There are now nine results in the BIPM.RI(II)-K1.Ba-133 comparison. 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 table. A graphical presentation is also given.


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    Title :

    Update of the BIPM comparison BIPM.RI(II)-K1.Ba-133 of activity measurements of the radionuclide 133Ba to include the 2009 result of the IRA (Switzerland) and the 2012 results of the LNE-LNHB (France) and BEV (Austria)


    Contributors:
    Michotte, C. (author) / Ratel, G. (author) / Courte, S. (author) / Caffari, Y. (author) / Frechou, C. (author) / Thiam, C. (author) / Brettner-Messler, R. (author) / Maringer, F.J. (author)

    Published in:

    Metrologia ; 51 , 1A (Technical Supplement 2014) ; 06017/1-06017/14


    Publication date :

    2014


    Size :

    14 Seiten




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English