Input interpretation
Ac-209 | decay constant
Result
6.93 per second
Decay properties
half-life | 100 ms (milliseconds) (0 to 200 ms) mean lifetime | 144 ms (milliseconds) (-8 to 290 ms) decay constant | 6.93 per second specific activity | 2×10^10 TBq/g (terabecquerels per gram) width | 3.16×10^-15 eV (electronvolts) decay modes | α (alpha emission) | β^+ (positron emission) final decay products | Au-197 (70%) | Hg-201 (29%) | Tl-205 (1%) | Ir-193 (7×10^-5%) | Os-189 (7×10^-12%)
Unit conversion
416 per minute
Corresponding quantities
Lifetime from τ = 1/λ: | 144 ms (milliseconds)
Half-life from t_(1/2) = log(2)/λ: | 100 ms (milliseconds)