Table 1.
Physical properties of α-emitting radionuclides of interest for medical applications.
| Radionuclide | Half-Life | Energy of Emitted α Particles (MeV) | Main Production Route | Availability |
|---|---|---|---|---|
| 212Bi | 60.6 min | 6.051 (25.1%) 6.090 (9.8%) 8.785 (64%) |
224Ra/212Bi generator | Relatively high |
| 213Bi | 45.6 min | 5.875 (2.2%) 8.376 (97.8%) 1 |
225Ac/213Bi generator | Moderate |
| 225Ac | 10.0 d | 5.732 (8.0%) 5.791 (8.6%) 5.793 (18.1%) 5.830 (50.7%) |
229Th/225Ac 226Ra(p,2n)225Ac 232Th(p,spall.) 225Ac |
Moderate |
| 211At | 7.2 h | 5.870 (41.8%) 7.450 (58.2%) |
natBi(α,2n)211At | Moderate |
| 223Ra | 11.4 d | 5.540 (9.0%) 5.607 (25.2%) 5.716 (51.6%) 5.747 (9.0%) |
227Ac/223Ra generator | Commercially available |
| 224Ra | 3.6 d | 5.449 (5.0%) 5.685 (94.9%) |
228Th/224Ra generator | Relatively high |
| 226Th | 30.7 min | 6.234 (22.8%) 6.337 (75.5%) |
230U/226Th generator | Low |
| 227Th | 18.7 d | 5.709 (8.3%) 5.713 (5.0%) 5.757 (20.4%) 5.978 (23.5%) 6.038 (24.2%) |
227Ac/227Th generator | Moderate |
| 212Pb | 10.6 d | 6.051 (25.1%) 2 6.090 (9.8%) 2 8.785 (64%) 2 |
224Ra/212Pb generator | Commercially available |
1 energy of α particles emitted by daughter-213Po; 2 energy of α particles emitted by daughter-212Bi.