Tableau 2
Concentrations en U, Th, et rapports d’activités (notés entre parenthèses) des nucléides de la chaîne de désintégration de 238U, deux d’entre eux étant normalisés à 232Th. Les incertitudes sont données en 2σ.
U and Th concentrations, and activity ratios (in parentheses) measured in the nuclides of the 238U decay chain. Two of them are normalized to 232Th. Uncertainties are reported as 2σ.
| Échantillon | U (µg/g) | Erreur | Th (µg/g) | Erreur | (234U/238U) | Erreur | (238U/232Th) | Erreur | (230Th/232Th) | Erreur | (230Th/238U) | Erreur | (230Th/234U) | Erreur |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| P1 – millimétriques | ||||||||||||||
| P1-1 | 4,738 | 0,019 | 50,217 | 0,049 | 1,1802 | 0,0031 | 0,2863 | 0,0012 | 0,3542 | 0,0038 | 1,2373 | 0,0051 | 1,0484 | 0,0043 |
| P1-2 | 3,026 | 0,013 | 33,704 | 0,019 | 1,0915 | 0,0043 | 0,2724 | 0,0012 | 0,3551 | 0,0113 | 1,3033 | 0,0056 | 1,1940 | 0,0051 |
| P1-3 | 6,087 | 0,023 | 17,078 | 0,010 | 1,1760 | 0,0034 | 1,0816 | 0,0042 | 1,3476 | 0,0141 | 1,1455 | 0,0044 | 0,9741 | 0,0038 |
| P2 – centimétriques | ||||||||||||||
| P2-1 | 3,892 | 0,045 | 11,310 | 0,012 | 1,0685 | 0,0020 | 1,0443 | 0,0121 | 1,1092 | 0,0098 | 1,0622 | 0,0123 | 0,9941 | 0,0115 |
| P2-2 | 3,953 | 0,068 | 72,790 | 0,101 | 1,1170 | 0,0026 | 0,1648 | 0,0029 | 0,1802 | 0,0017 | 1,1501 | 0,0199 | 1,0296 | 0,0179 |
| P2-3 | 4,147 | 0,015 | 26,262 | 0,019 | 1,0631 | 0,0033 | 0,4791 | 0,0018 | 0,5462 | 0,0050 | 1,1541 | 0,0043 | 1,0855 | 0,0040 |
| P2-4 ext. | 4,758 | 0,012 | 33,152 | 0,011 | 1,0477 | 0,0090 | 0,4355 | 0,0011 | 0,5683 | 0,0092 | 1,3061 | 0,0033 | 1,2466 | 0,0031 |
| P2-4 int. | 3,539 | 0,013 | 8,551 | 0,005 | 1,0960 | 0,0143 | 1,2559 | 0,0048 | 3,7885 | 0,0467 | 3,0177 | 0,0115 | 2,7535 | 0,0105 |
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