Input interpretation
Ac-224 | decay modes
Result
β^+ (positron emission) | α (alpha emission) | β^- (electron emission)
Decay properties
half-life | 170 minutes (156.4 to 177.02 min) mean lifetime | 4 hours (3.7636 to 4.2586 h) decay constant | 6.94×10^-5 per second specific activity | 187000 TBq/g (terabecquerels per gram) width | 4.56×10^-20 eV (electronvolts) decay modes | β^+ (positron emission) | α (alpha emission) | β^- (electron emission) final decay products | Pb-208 (100%) | Pb-206 (3.6×10^-9%)
Decay modes
decay mode | β^+ (positron emission) branching ratio | 90.6% Q-value | 385.33 keV (kiloelectronvolts) daughter nuclide | Ra-224 decay mode | α (alpha emission) branching ratio | 9.4% Q-value | 6.3269 MeV (megaelectronvolts) daughter nuclide | Fr-220 decay mode | β^- (electron emission) branching ratio | 1.6% Q-value | 238.4 keV (kiloelectronvolts) daughter nuclide | Th-224