| Decay chain | Analytical isotope | Gamma-ray energy(keV) | Absolute emission intensity (%) |
| 238U | 234Th | 63.29(2) | 4.4(9) |
| 234mPa | 766.36(2) | 0.207(30) | |
| 234mPa | 1001.03(3) | 0.59(8) | |
| 234U | 53.20(2) | 0.123(2) | |
| 235U | 235U | 185.715(5) | 57.2(8) |
| 231Th | 84,214(3) | 6.71(10) |