Worldwide Open Proficiency Test: Determination of ... - Nucleus - IAEA

In general, it can be noticed that after three runs of the world wide proficiency test the overall
performance of the gamma spectrometry community in determination of Co-60, Cs-134 and
Cs-137 has been improved not only in terms of better trueness and commutability
(comparability), but also in terms of smaller and more realistically estimated measurement
results uncertainties. Figures 16 and 17 demonstrate the observed improvement.
Difference S2-S4 (%)
Difference S2-S4 (%)
Difference S2-S4 (%)
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Draft, page 28
Difference between reported results for Co-57 in samples 02 and 04
Lab code
Difference between reported results for Co-60 in samples 02 and 04
Lab code
Difference between reported results for Cs-134 in samples 02 and 04
Lab code
Figures 11, 12 and 13: Difference between reported results for Co-57, Co-60 and Cs-134 in the
duplicate samples 02 and 04