Input interpretation
Cm-248 (curium-248) | Bk-252 (berkelium-252)
Decay properties
| Cm-248 | Bk-252 half-life | 0.35 Myr (0.3416 to 0.3547 Myr) | 110 s (71 to 141 s) mean lifetime | 0.501 Myr (0.4931 to 0.5114 Myr) | 160 s (112 to 210 s) decay constant | 6.33×10^-14 per second | 0.00625 per second specific activity | 154 MBq/g | 1.49×10^7 TBq/g width | 4.15×10^-29 eV | 4.2×10^-18 eV decay modes | α (alpha emission) | SF (spontaneous fission) | 2β^- (double beta decay) | β^- (electron emission) | α (alpha emission) final decay products | Pb-208 (90%) | Pb-206 (3.7×10^-9%) | Pb-204 (0%) | Hg-200 (0%) | Hg-204 (0%) | Pb-204 (0%) | Pb-206 (0%) | Pb-208 (0%) | Hg-200 (0%) | Hg-204 (0%)
Decay modes
Cm-248
decay mode | α (alpha emission) branching ratio | 91.61% Q-value | 5.16173 MeV (megaelectronvolts) daughter nuclide | Pu-244 decay mode | SF (spontaneous fission) branching ratio | 8.39% decay mode | 2β^- (double beta decay) Q-value | 152.44 keV (kiloelectronvolts) daughter nuclide | Cf-248
Bk-252
decay mode | β^- (electron emission) Q-value | 2.5 MeV (megaelectronvolts) daughter nuclide | Cf-252 decay mode | α (alpha emission) Q-value | 5.547 MeV (megaelectronvolts) daughter nuclide | Am-248
Radiation shielding
Radiation shielding
Decay chain
Cm-248
Decay chain Cm-248
Bk-252
Decay chain Bk-252
Mass properties
| Cm-248 | Bk-252 atomic number (Z) | 96 | 97 mass number (A) | 248 | 252 neutron number | 152 | 155 atomic mass | 248.072348508 u (unified atomic mass units) | 252.08431 u (unified atomic mass units) mass excess | 67.392202 MeV (megaelectronvolts) | 78.534 MeV (megaelectronvolts) binding energy per nucleon | 7.496731 MeV (megaelectronvolts) | 7.459 MeV (megaelectronvolts)
Mass properties
Nearby isotopes
Nearby isotopes
Quantum properties
| Cm-248 spin parity J^π | 0^+ (atomic boson) magnetic moment | 0 μ_N
Quantum properties