Input interpretation
Ac-211 | decay constant
Result
3.3 per second
Decay properties
half-life | 210 ms (milliseconds) (160 to 260 ms) mean lifetime | 303 ms (milliseconds) (210 to 400 ms) decay constant | 3.3 per second specific activity | 9.42×10^9 TBq/g (terabecquerels per gram) width | 1.51×10^-15 eV (electronvolts) decay modes | α (alpha emission) | β^+ (positron emission) final decay products | Tl-203 (70%) | Hg-199 (29%) | Pb-207 (3.8%)
Unit conversion
198 per minute
Corresponding quantities
Lifetime from τ = 1/λ: | 303 ms (milliseconds)
Half-life from t_(1/2) = log(2)/λ: | 210 ms (milliseconds)