Input interpretation
Ac-229 Sm-140 | half-life
Results
Ac-229 | 62.67 minutes (62.13 to 63.29 min) Sm-140 | 14.82 minutes (14.697 to 14.943 min)
Units
Relative values
| visual | ratios | | comparisons Sm-140 | | 0.2365 | 1 | 76.35% smaller Ac-229 | | 1 | 4.229 | 322.9% larger
Decay properties
| Ac-229 | Sm-140 half-life | 62.67 min (62.13 to 63.28 min) | 14.82 min (14.698 to 14.942 min) mean lifetime | 90.5 min (89.63 to 91.27 min) | 21.38 min (21.206 to 21.556 min) decay constant | 1.842×10^-4 per second | 7.794×10^-4 per second specific activity | 484200 TBq/g | 3.355×10^6 TBq/g width | 1.21×10^-19 eV | 5.131×10^-19 eV decay modes | β^- (electron emission) | β^+ (positron emission) final decay products | Tl-205 (100%) | Pb-207 (7×10^-10%) | Ce-140 (100%)