Input interpretation
At-219 | decay constant
Result
0.012 per second
Decay properties
half-life | 56 seconds (52.5 to 59.5 s) mean lifetime | 81 seconds (75.8 to 85.8 s) decay constant | 0.012 per second specific activity | 3.4×10^7 TBq/g (terabecquerels per gram) width | 8.1×10^-18 eV (electronvolts) decay modes | α (alpha emission) | β^- (electron emission) final decay products | Pb-207 (100%)
Unit conversion
0.74 per minute
Corresponding quantities
Lifetime from τ = 1/λ: | 81 seconds | 1.3 minutes
Half-life from t_(1/2) = log(2)/λ: | 56 seconds | 0.94 minutes