Input interpretation
Ac-223 | decay modes
Result
α (alpha emission) | ϵ (electron capture)
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%)
Decay modes
decay mode | α (alpha emission) branching ratio | 99% Q-value | 6.7832 MeV (megaelectronvolts) daughter nuclide | Fr-219 decay mode | ϵ (electron capture) branching ratio | 1% Q-value | 591.78 keV (kiloelectronvolts) daughter nuclide | Ra-223