Isotope | Т1/2 | Т1/2(SF) | SF (%) | nAbn | Decay mode | BF | Reference |
235U | 7.04(1) × 108 y | 0.98(28) × 1019 y | 7.0(2) × 10−9 | 1.86 | α | 100 | [8] [11] [14] |
231Th | 25.52(1) h |
| - |
| β- | 100 | [15] |