Input interpretation
Ac-223 Pm-141 | half-life
Results
Ac-223 | 126 seconds (120 to 132 s) Pm-141 | 20.9 minutes (20.8 to 21 min)
Units
Relative values
| visual | ratios | | comparisons Ac-223 | | 0.1 | 1 | 90% smaller Pm-141 | | 1 | 10 | 900% larger
Decay properties
| Ac-223 | Pm-141 half-life | 126 s (120 to 132 s) | 20.9 min (20.8 to 21 min) mean lifetime | 182 s (171 to 193 s) | 30.15 min (30 to 30.3 min) decay constant | 0.0055 per second | 5.527×10^-4 per second specific activity | 1.49×10^7 TBq/g | 2.362×10^6 TBq/g width | 2.51×10^-18 eV | 2.522×10^-19 eV decay modes | α (alpha emission) | ϵ (electron capture) | β^+ (positron emission) final decay products | Pb-207 (100%) | Tl-205 (9×10^-10%) | Pr-141 (100%)