Input interpretation
Fm-250 (fermium-250) | Dy-150 (dysprosium-150)
Decay properties
| Fm-250 | Dy-150 half-life | 30 min (26.97 to 33.03 min) | 7.17 min (7.11 to 7.23 min) mean lifetime | 43 min (38.82 to 47.87 min) | 10.3 min (10.26 to 10.43 min) decay constant | 3.8×10^-4 per second | 0.00161 per second specific activity | 930000 TBq/g | 6.47×10^6 TBq/g width | 2.5×10^-19 eV | 1.06×10^-18 eV decay modes | α (alpha emission) | ϵ (electron capture) | SF (spontaneous fission) | β^+ (positron emission) | α (alpha emission) final decay products | Pb-206 (100%) | Tl-205 (2×10^-8) | Pb-208 (2.6×10^-11) | W-184 (9×10^-14) | Yb-168 (2×10^-17) | Er-164 (2×10^-17) | Dy-160 (7×10^-19) | Dy-156 (4×10^-21) | Sm-144 (4×10^-22) | Ce-140 (5×10^-23) | Dy-164 (0) | Er-168 (0) | Gd-156 (0) | Hf-176 (0) | Hf-180 (0) | Sm-152 (0) | Yb-172 (0) | Nd-142 (100%) | Sm-150 (0)
Decay modes
Fm-250
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 | 6.9×10^-5
Dy-150
decay mode | β^+ (positron emission) branching ratio | 64% Q-value | 771.39 keV (kiloelectronvolts) daughter nuclide | Tb-150 decay mode | α (alpha emission) branching ratio | 36% Q-value | 4.35131 MeV (megaelectronvolts) daughter nuclide | Gd-146
Radiation shielding
Radiation shielding
Decay chain
Fm-250
Decay chain Fm-250
Dy-150
Decay chain Dy-150
Mass properties
| Fm-250 | Dy-150 atomic number (Z) | 100 | 66 mass number (A) | 250 | 150 neutron number | 150 | 84 atomic mass | 250.079521264 u (unified atomic mass units) | 149.925585184 u (unified atomic mass units) mass excess | 74.073581 MeV (megaelectronvolts) | -69.316955 MeV (megaelectronvolts) binding energy per nucleon | 7.462084 MeV (megaelectronvolts) | 8.189198 MeV (megaelectronvolts)
Mass properties
Nearby isotopes
Nearby isotopes