Input interpretation
Ac-223 | half-life
Result
126 seconds (120 to 132 s)
Decay properties
half-life | 126 seconds (120 to 132 s) mean lifetime | 182 seconds (171 to 193 s) decay constant | 0.0055 per second specific activity | 1.49×10^7 TBq/g (terabecquerels per gram) width | 2.51×10^-18 eV (electronvolts) decay modes | α (alpha emission) | ϵ (electron capture) final decay products | Pb-207 (100%) | Tl-205 (9×10^-10%)
Unit conversions
2 minutes 6 seconds
2.1 minutes
Comparison as half-life
≈ 0.42 × half-life of uranium-241 ( ≈ 300 s )