Input interpretation
U-235 | decay modes
Result
α (alpha emission) | SF (spontaneous fission) | ^28Mg (cluster emission) | ^25Ne (cluster emission) | ^20Ne (cluster emission)
Decay properties
half-life | 0.704 Gyr (gigayears) (702.2 to 706.6 Myr) mean lifetime | 1.02 Gyr (gigayears) (1.014 to 1.019 Gyr) decay constant | 3.12×10^-17 per second specific activity | 79.8 kBq/g (kilobecquerels per gram) width | 2.05×10^-32 eV (electronvolts) decay modes | α (alpha emission) | SF (spontaneous fission) | ^28Mg (cluster emission) | ^25Ne (cluster emission) | ^20Ne (cluster emission) final decay products | Pb-207 (100%) | Tl-205 (9×10^-8%) | Pb-206 (8×10^-10%) | Pb-208 (1×10^-12%)
Decay modes
decay mode | α (alpha emission) branching ratio | 100% Q-value | 4.67826 MeV (megaelectronvolts) daughter nuclide | Th-231 decay mode | SF (spontaneous fission) branching ratio | 7×10^-9% decay mode | ^28Mg (cluster emission) branching ratio | 8×10^-10% daughter nuclide | Hg-207 decay mode | ^25Ne (cluster emission) branching ratio | 8×10^-10% daughter nuclide | Pb-210 decay mode | ^20Ne (cluster emission) branching ratio | 8×10^-10% daughter nuclide | Pb-215