Input interpretation
Ac-229 Au-173 | half-life
Results
Ac-229 | 62.67 minutes (62.13 to 63.29 min) Au-173 | 25 ms (milliseconds) (23.6 to 26.4 ms)
Units
Relative values
| visual | ratios | | comparisons Au-173 | | 6.6×10^-6 | 1 | 99.99934% smaller Ac-229 | | 1 | 150000 | 1.5×10^7% larger
Decay properties
| Ac-229 | Au-173 half-life | 62.67 min (62.13 to 63.28 min) | 25 ms (23.7 to 26.3 ms) mean lifetime | 90.5 min (89.63 to 91.27 min) | 36 ms (34.3 to 37.9 ms) decay constant | 1.842×10^-4 per second | 28 per second specific activity | 484200 TBq/g | 9.7×10^10 TBq/g width | 1.21×10^-19 eV | 1.8×10^-14 eV decay modes | β^- (electron emission) | α (alpha emission) | β^+ (positron emission) final decay products | Tl-205 (100%) | Pb-207 (7×10^-12) | Tm-169 (5%) | Yb-173 (0.9%) | Ho-165 (0.6%) | Dy-161 (1×10^-5) | Gd-157 (1×10^-8) | Eu-153 (3×10^-11) | Sm-149 (3×10^-11) | Nd-145 (6×10^-12) | Pr-141 (2×10^-20)