Input interpretation
At-211 | decay modes
Result
ϵ (electron capture) | α (alpha emission)
Decay properties
half-life | 7.2139 hours (7.2059 to 7.2222 h) mean lifetime | 10.408 hours (10.397 to 10.419 h) decay constant | 2.6688×10^-5 per second specific activity | 76175 TBq/g (terabecquerels per gram) width | 1.757×10^-20 eV (electronvolts) decay modes | ϵ (electron capture) | α (alpha emission) final decay products | Pb-207 (100%)
Decay modes
decay mode | ϵ (electron capture) branching ratio | 58.2% Q-value | 785.36 keV (kiloelectronvolts) daughter nuclide | Po-211 decay mode | α (alpha emission) branching ratio | 41.8% Q-value | 5.98237 MeV (megaelectronvolts) daughter nuclide | Bi-207