| Nuclide | Half-life | E(α) keV | E(β) keV | E(γ) keV | X-rays |
|---|---|---|---|---|---|
| U-238 | 4.47 Gy | 4198 | 93.4 Th Kα1 (0.03%) 13.0 Th Lα1 (2.5%) 16.2 Th Lβ1 (3%) | ||
| Th-234 | 24.10 d | 199 (70%) | 92.6 (5%) 63.3 (5%) |
95.9 Pa Kα1 (0.8%) 13.3 Pa Lα1 (4%) 16.7 Pa Lβ1 (2%) |
|
| Pa-234 m | 1.17 m | 2269 (99%) | 1001 (0.8%) | 98.4 U Kα1 13.4 U Lα1 |
|
| U-234 | 0.246 My | 4775 | 53.2 (0.1%) | 93.4 Th Kα1 (0.004%) 13.0 Th Lα1 (3%) 16.2 Th Lβ1 (4%) |
|
| Th-230 | 75.4 ky | 4687 | 67.7 (0.4%) | 88.5 Ra Kα1 (0.007%) 12.3 Ra Lα1 (3%) |
|
| Ra-226 | 1600 y | 4784 | 186 (4%) | 83.8 Rn Kα1 (0.3%) 11.7 Rn Lα1 (0.3%) |
|
| Rn-222 | 3.82 d | 5490 | 511 (0.1%) | ||
| Po-218 | 3.10 m | 6002 | |||
| Pb-214 | 26.8 m | 672 (49%) | 352 (38%) 295 (19%) 242 (7%) |
77.1 Bi Kα1 (8%) 10.8 Bi Lα1 (4%) |
|
| Bi-214 | 19.9 m | 3272 (18%) | 609 (46%) 1764 (15%) 1120 (15%) 1238 (6%) |
79.3 Po Kα1 (1%) 11.1 Po Lα1 (0.3%) |
|
| Po-214 | 164 µs | 7687 | 75.0 Pb Kα1 (weak) 10.6 Pb Lα1 (weak) |
||
| Pb-210 | 22.3 y | 16.9 (84%) | 46.5 (4%) | 10.8 Bi Lα1 (8%) 13.0 Bi Lβ12 (6%) |
|
| Bi-210 | 5.0 d | ? | |||
| Po-210 | 138 d | 5304 | 46.5 (4%) | 75.0 Pb Kα1 (weak) 10.6 Pb Lα1 (weak) |
|
| Pb-206 | stable |