| DCh | Isotope | Т1/2 | Т1/2(SF) | SF (%) | nAbn | DM | BF (%) | Refs. |
| 238U | 238U | 4.468(5) × 109y | 8.20(6) × 1015 y | 5.45(4) × 10−5 | 1.98(3) | α | 100 | [2] -[4] |
|
| 234Th | 24.10(3) d |
|
|
| β− | 100 | [5] [6] |
|
| 234mPa | 1.159(11) min |
| <1 × 10−9 |
| β− IT | 99.85(1) 0.15(1) | [5] [7] |
|
| 234Pa | 6.70(5)h |
| <3 × 10−10 |
| β− | 100 | [5] [7] |
|
| 234U | 2.455(6) × 105y | 1.5(0.2) × 1016y | 1.6(2) × 10−9 | 1.63(15) | α | 100 | [8] -[10] |
|
| 230Th | 7.54(3) × 104 y |
| <4 × 10−12 |
| α | 100 | [11] |
| 232Th | 232Th | 1.402(1) × 1010 y | 1.22 × 1021 y | 1.1 × 10−9 | 2.13(20) | α | 100 | [11] |
|
| 228Ac | 6.15(3) h |
|
|
| β− α | 100 5.5(22)・10−6 | [12] |
|
| 212Pb | 10.64(1) h |
|
|
| β− | 100 | [13] |
|
| 208Tl | 3.053(4) min |
| - |
| β− | 100 | [11] |