Input interpretation
Am-241 | half-life
Result
432.5 years (431.72 to 433.26 yr)
Decay properties
half-life | 432.5 years (431.73 to 433.25 yr) mean lifetime | 624 years (622.87 to 625 yr) decay constant | 5.081×10^-11 per second specific activity | 126.9 GBq/g (gigabecquerels per gram) width | 3.345×10^-26 eV (electronvolts) decay modes | α (alpha emission) | SF (spontaneous fission) | ^34Si (cluster emission) final decay products | Tl-205 (100%) | Pb-207 (7×10^-10%)
Critical properties
critical mass | 66 kg (kilograms) critical diameter | 21.5 cm (centimeters) (for a uniform sphere)
Unit conversion
1.364×10^10 seconds
Comparisons as half-life
≈ ( 0.076 ≈ 1/13 ) × half-life of carbon-14 ( ≈ 1.8×10^11 s )
≈ 82 × half-life of cobalt-60 ( 1.6635×10^8 s )