Input interpretation
Ac-227 | decay constant
Result
1.0095×10^-9 per second
Decay properties
half-life | 21.772 years (21.764 to 21.78 yr) mean lifetime | 31.41 years (31.398 to 31.423 yr) decay constant | 1.0095×10^-9 per second specific activity | 2.6779 TBq/g (terabecquerels per gram) width | 4.6055×10^-25 eV (electronvolts) decay modes | β^- (electron emission) | α (alpha emission) final decay products | Pb-207 (100%) | Tl-205 (9×10^-10)
Corresponding quantities
Lifetime from τ = 1/λ: | 9.9056×10^8 seconds | 1.6509×10^7 minutes | 275150 hours | 11465 days | 31 years
Half-life from t_(1/2) = log(2)/λ: | 6.866×10^8 seconds | 1.1443×10^7 minutes | 190720 hours | 7947 days | 22 years