Input interpretation
Pr-121 | decay constant
Result
0.5 per second
Decay properties
half-life | 1.4 seconds (0 to 3 s) mean lifetime | 2 seconds (-0.5 to 5 s) decay constant | 0.5 per second specific activity | 2.5×10^9 TBq/g (terabecquerels per gram) width | 2.3×10^-16 eV (electronvolts) decay modes | p (proton emission) | β^+ (positron emission) | β^+p (positron + delayed proton) final decay products | Sb-121 (0%) | Te-120 (0%) | Sn-115 (0%) | Sn-116 (0%) | Sn-119 (0%) | Sn-120 (0%)
Unit conversion
30 per minute
Corresponding quantities
Lifetime from τ = 1/λ: | 2 seconds
Half-life from t_(1/2) = log(2)/λ: | 1.4 seconds