Table 5.
Summary of NUSIMEP-7 results
| NUSIMEP-7 test sample | 235U/238U | CRM for external correction | RU (k = 2) (%) | RDb (%) | z scorec | zeta scorec | Cluster size/data points |
|---|---|---|---|---|---|---|---|
| ‘Single’ deposition | 0.00898(90) | IRMM-184 | 10.0 | −1.0 | −2.04 | −0.21 | 144 |
| 0.2130(10) | CRM U500 | 0.5 | –a | –a | –a | 119 | |
| ‘Double’ deposition | 0.0090(11) | IRMM-184 | 12.2 | −0.7 | −1.60 | −0.13 | 29 |
| 0.0332(10) | CRM U030-A | 3.0 | −2.6 | −5.55 | −1.89 | 633 | |
| 0.2096(11) | CRM U500 | 0.5 | –a | –a | –a | 122 |
aContamination
bRelative difference to the certified value
cInterpretation of scores: |score| ≤ 2, satisfactory result; 2 < |score| < 3, questionable result; |score| > 3, unsatisfactory result