Input interpretation
Ac-229 Te-138 | decay modes
Results
Ac-229 | β^- (electron emission) Te-138 | β^- (electron emission) | β^-n (electron + delayed neutron)
Decay properties
| Ac-229 | Te-138 half-life | 62.67 min (62.13 to 63.28 min) | 1.4 s (0.88 to 1.82 s) mean lifetime | 90.5 min (89.63 to 91.27 min) | 2 s (1.42 to 2.62 s) decay constant | 1.842×10^-4 per second | 0.5 per second specific activity | 484200 TBq/g | 2.2×10^9 TBq/g width | 1.21×10^-19 eV | 3.3×10^-16 eV decay modes | β^- (electron emission) | β^- (electron emission) | β^-n (electron + delayed neutron) final decay products | Tl-205 (100%) | Pb-207 (7×10^-12) | Ba-138 (90%) | Ba-137 (11%) | Xe-136 (0.45%) | Ba-136 (0)
Decay modes
Ac-229
decay mode | β^- (electron emission) branching ratio | 100% Q-value | 1.167 MeV (megaelectronvolts) daughter nuclide | Th-229
Te-138
decay mode | β^- (electron emission) branching ratio | 94% Q-value | 6.4 MeV (megaelectronvolts) daughter nuclide | I-138 decay mode | β^-n (electron + delayed neutron) branching ratio | 6.3% Q-value | 2.5 MeV (megaelectronvolts) daughter nuclide | I-137