Input interpretation
Ac-226 | decay modes
Result
β^- (electron emission) | ϵ (electron capture) | α (alpha emission)
Decay properties
half-life | 29.36 hours (29.21 to 29.4919 h) mean lifetime | 42.36 hours (42.197 to 42.5475 h) decay constant | 6.557×10^-6 per second specific activity | 17470 TBq/g (terabecquerels per gram) width | 4.315×10^-21 eV (electronvolts) decay modes | β^- (electron emission) | ϵ (electron capture) | α (alpha emission) final decay products | Pb-206 (100%) | Tl-205 (3×10^-7%) | Pb-208 (2.5×10^-8%)
Decay modes
decay mode | β^- (electron emission) branching ratio | 83% Q-value | 1.11315 MeV (megaelectronvolts) daughter nuclide | Th-226 decay mode | ϵ (electron capture) branching ratio | 17% Q-value | 641.11 keV (kiloelectronvolts) daughter nuclide | Ra-226 decay mode | α (alpha emission) branching ratio | 0.006% Q-value | 5.536 MeV (megaelectronvolts) daughter nuclide | Fr-222