Input interpretation
Cf-246 (californium-246)
Decay properties
half-life | 35.7 hours (34.2 to 37.2 h) mean lifetime | 51.5 hours (49 to 54 h) decay constant | 5.39×10^-6 per second specific activity | 13200 TBq/g (terabecquerels per gram) width | 2.46×10^-21 eV (electronvolts) decay modes | α (alpha emission) | ϵ (electron capture) | SF (spontaneous fission) final decay products | Pb-206 (100%) | Tl-205 (1.9×10^-8) | Pb-208 (2.6×10^-11) | W-184 (9×10^-14) | Yb-168 (2×10^-17) | Er-164 (2×10^-17) | Dy-160 (8×10^-19) | Dy-156 (5×10^-21) | Sm-144 (5×10^-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)
Decay modes
decay mode | α (alpha emission) branching ratio | 100% Q-value | 6.8616 MeV (megaelectronvolts) daughter nuclide | Cm-242 decay mode | ϵ (electron capture) branching ratio | 4×10^-5 Q-value | 123.3 keV (kiloelectronvolts) daughter nuclide | Bk-246 decay mode | SF (spontaneous fission) branching ratio | 2.5×10^-6
Radiation shielding
lead | 22.6 µm water | 61.3 µm air | 55.8 mm
Decay chain
Decay chain
Mass properties
atomic number (Z) | 98 mass number (A) | 246 neutron number | 148 atomic mass | 246.068805309 u (unified atomic mass units) mass excess | 64.091733 MeV (megaelectronvolts) binding energy per nucleon | 7.499115 MeV (megaelectronvolts)
Mass properties
Nearby isotopes
Nearby isotopes
Quantum properties
spin parity J^π | 0^+ (atomic boson) magnetic moment | 0 μ_N
Quantum properties
Excitations
E_level | spin parity J^π | half-life τ_1/2 | width Δ 44 keV (kiloelectronvolts) | 2^+ | (unknown) | (unknown) 2500 keV (kiloelectronvolts) | (unknown) | 4.5×10^-8 seconds | 1×10^-8 eV (electronvolts)