Input interpretation
At-203 | decay modes
Result
β^+ (positron emission) | α (alpha emission)
Decay properties
half-life | 7.33 minutes (7.12 to 7.68 min) mean lifetime | 10.7 minutes (10.3 to 11.1 min) decay constant | 0.00156 per second specific activity | 4.64×10^6 TBq/g (terabecquerels per gram) width | 1×10^-18 eV (electronvolts) decay modes | β^+ (positron emission) | α (alpha emission) final decay products | Tl-203 (69%) | Hg-199 (31%)
Decay modes
decay mode | β^+ (positron emission) branching ratio | 69% Q-value | 4.1214 MeV (megaelectronvolts) daughter nuclide | Po-203 decay mode | α (alpha emission) branching ratio | 31% Q-value | 6.21005 MeV (megaelectronvolts) daughter nuclide | Bi-199