Input interpretation
Ac-208 | decay modes
Result
α (alpha emission) | β^+ (positron emission)
Decay properties
half-life | 95 ms (milliseconds) (70 to 130 ms) mean lifetime | 140 ms (milliseconds) (90 to 190 ms) decay constant | 7.3 per second specific activity | 2.1×10^10 TBq/g (terabecquerels per gram) width | 3.3×10^-15 eV (electronvolts) decay modes | α (alpha emission) | β^+ (positron emission) final decay products | Hg-196 (60%) | Hg-200 (40%) | Pb-204 (0.05%) | Pt-192 (6×10^-4%) | Pb-208 (4×10^-8%) | Os-188 (3×10^-11%) | Os-184 (7×10^-18%) | Hf-176 (0%) | Hf-180 (0%) | Pt-196 (0%) | W-180 (0%) | W-184 (0%)
Decay modes
decay mode | α (alpha emission) branching ratio | 99% Q-value | 7.7268 MeV (megaelectronvolts) daughter nuclide | Fr-204 decay mode | β^+ (positron emission) branching ratio | 1% Q-value | 8.0241 MeV (megaelectronvolts) daughter nuclide | Ra-208