Input interpretation
Cf-238 | decay modes
Result
SF (spontaneous fission) | α (alpha emission) | β^+ (positron emission)
Decay properties
half-life | 21.1 ms (milliseconds) (19.77 to 22.43 ms) mean lifetime | 30.4 ms (milliseconds) (28.54 to 32.35 ms) decay constant | 32.9 per second specific activity | 8.32×10^10 TBq/g (terabecquerels per gram) width | 2.16×10^-14 eV (electronvolts) decay modes | SF (spontaneous fission) | α (alpha emission) | β^+ (positron emission) final decay products | Pb-206 (0.09%) | Tl-205 (2×10^-11) | Pb-208 (4×10^-14) | W-184 (8×10^-17) | Ce-140 (0) | Dy-156 (0) | Dy-160 (0) | Dy-164 (0) | Er-164 (0) | Er-168 (0) | Gd-156 (0) | Hf-176 (0) | Hf-180 (0) | Sm-144 (0) | Sm-152 (0) | Yb-168 (0) | Yb-172 (0)
Decay modes
decay mode | SF (spontaneous fission) branching ratio | 100% decay mode | α (alpha emission) branching ratio | 0.2% Q-value | 8.055 MeV (megaelectronvolts) daughter nuclide | Cm-234 decay mode | β^+ (positron emission) Q-value | 1.893 MeV (megaelectronvolts) daughter nuclide | Bk-238