Input interpretation
Ac-224 | decay constant
Result
6.94×10^-5 per second
Decay properties
half-life | 170 minutes (156.4 to 177.02 min) mean lifetime | 4 hours (3.7636 to 4.2586 h) decay constant | 6.94×10^-5 per second specific activity | 187000 TBq/g (terabecquerels per gram) width | 4.56×10^-20 eV (electronvolts) decay modes | β^+ (positron emission) | α (alpha emission) | β^- (electron emission) final decay products | Pb-208 (100%) | Pb-206 (3.6×10^-9%)
Corresponding quantities
Lifetime from τ = 1/λ: | 14400 seconds | 240 minutes | 4 hours | 0.17 days
Half-life from t_(1/2) = log(2)/λ: | 9980 seconds | 166 minutes | 2.8 hours | 0.12 days