Half-life (d) | 2.671 | 6.647 | 2.805 | 6.906 |
Type of decay (%) | β− (100%) | β− (100%) | Electron capture (100%) | β− (100%) |
β-particle mean energy (keV) | 932.9 | 133.3 | — | 154.3 |
CE (keV per decay) | 0.2 | 13.52 | 27.94 | 39.28 |
CE energy range (keV) | | 6.2–206.3 | 144.6–245.4 | 3.3–98.3 |
Auger and Coster–Kronig electrons (keV per decay) | 0.0007 | 1.13 | 6.88 | 8.94 |
Auger and Coster–Kronig electron energy range (keV) | | 0.01–61.7 | 0.037–25.6 | 0.018–50.9 |
Total electron energy per decay (keV) | 933.1 | 147.9 | 34.8 | 202.5 |
γ-radiation useful for imaging: energy (keV) and abundance (%) | — | 208.4 (11%); 112.9 (6.4%) | 245.4 (94.1%); 171.3 (90.6%) | 74.6 (10.2%) |
Photons X and γ (total energy per decay in keV) | 0.0012 | 35.1 | 405 | 36.35 |
Energy per decay in keV (photons + electrons) | | 183 | 439.8 | 238.9 |
Percentage of energy emitted as photons | ∼0 | 19.2% | 92.1% | 15.2% |