Table 1.
The characteristics of 177Lu and 161Tb radionuclides [18]
| Radionuclide | 177Lu | 161Tb |
|---|---|---|
| Half-life (d) | 6.647 | 6.906 |
| Type of decay (%) | β− (100%) | β− (100%) |
| β-Particle mean energy (keV) | 133.3 | 154.3 |
| Conversion electrons (keV per decay) | 13.52 | 39.28 |
| Conversion electrons energy range (keV) | 6.2–206.3 | 3.3–98.3 |
| Auger and Coster–Kronig electrons (keV per decay) | 1.13 | 8.94 |
| Auger and Coster–Kronig electron energy range (keV) | 0.01–61.7 | 0.018–50.9 |
| Total electron energy per decay (keV) | 147.9 | 202.5 |
| Photons X and γ (total energy per decay in keV) | 35.1 | 36.35 |
| Energy per decay in keV (photons 1 electrons) | 183 | 238.9 |
| Production method | Neutron irradiation of enriched 176Lu or 176Yb targets in nuclear reactor | Neutron irradiation of enriched 160Gd targets at nuclear reactor |
| Cost of production of no-carrier-added | Comparable | |