Input interpretation
Ac-227 | decay modes
Result
β^- (electron emission) | α (alpha emission)
Decay properties
half-life | 21.772 years (21.764 to 21.78 yr) mean lifetime | 31.41 years (31.398 to 31.423 yr) decay constant | 1.0095×10^-9 per second specific activity | 2.6779 TBq/g (terabecquerels per gram) width | 4.6055×10^-25 eV (electronvolts) decay modes | β^- (electron emission) | α (alpha emission) final decay products | Pb-207 (100%) | Tl-205 (9×10^-10)
Decay modes
decay mode | β^- (electron emission) branching ratio | 98.62% Q-value | 44.765 keV (kiloelectronvolts) daughter nuclide | Th-227 decay mode | α (alpha emission) branching ratio | 1.38% Q-value | 5.04219 MeV (megaelectronvolts) daughter nuclide | Fr-223