Input interpretation
Fm-250 | decay modes
Result
α (alpha emission) | ϵ (electron capture) | SF (spontaneous fission)
Decay properties
half-life | 30 minutes (26.97 to 33.03 min) mean lifetime | 43 minutes (38.82 to 47.87 min) decay constant | 3.8×10^-4 per second specific activity | 930000 TBq/g (terabecquerels per gram) width | 2.5×10^-19 eV (electronvolts) decay modes | α (alpha emission) | ϵ (electron capture) | SF (spontaneous fission) final decay products | Pb-206 (100%) | Tl-205 (2×10^-6%) | Pb-208 (2.6×10^-9%) | W-184 (9×10^-12%) | Yb-168 (2×10^-15%) | Er-164 (2×10^-15%) | Dy-160 (7×10^-17%) | Dy-156 (4×10^-19%) | Sm-144 (4×10^-20%) | Ce-140 (5×10^-21%) | Dy-164 (0%) | Er-168 (0%) | Gd-156 (0%) | Hf-176 (0%) | Hf-180 (0%) | Sm-152 (0%) | Yb-172 (0%)
Decay modes
decay mode | α (alpha emission) branching ratio | 90% Q-value | 7.5569 MeV (megaelectronvolts) daughter nuclide | Cf-246 decay mode | ϵ (electron capture) branching ratio | 10% Q-value | 847 keV (kiloelectronvolts) daughter nuclide | Es-250 decay mode | SF (spontaneous fission) branching ratio | 0.0069%