Input interpretation
Cf-255 (californium-255) | V-59 (vanadium-59)
Decay properties
| Cf-255 | V-59 half-life | 85 min (58 to 110 min) | 75 ms (60 to 90 ms) mean lifetime | 120 min (96.1 to 149.2 min) | 110 ms (97.1 to 119 ms) decay constant | 1.4×10^-4 per second | 9.1 per second specific activity | 320000 TBq/g | 9.3×10^10 TBq/g width | 8.9×10^-20 eV | 6.1×10^-15 eV decay modes | β^- (electron emission) | SF (spontaneous fission) | α (alpha emission) | β^- (electron emission) | β^-n (electron + delayed neutron) final decay products | Pb-207 (100%) | Tl-205 (9×10^-8%) | Pb-206 (8×10^-10%) | Pb-208 (1×10^-12%) | Co-59 (100%) | Fe-58 (0%)
Decay modes
Cf-255
decay mode | β^- (electron emission) branching ratio | 100% Q-value | 720 keV (kiloelectronvolts) daughter nuclide | Es-255 decay mode | SF (spontaneous fission) branching ratio | 0.001% decay mode | α (alpha emission) branching ratio | 2×10^-7% Q-value | 5.736 MeV (megaelectronvolts) daughter nuclide | Cm-251
V-59
decay mode | β^- (electron emission) branching ratio | 100% Q-value | 10.825 MeV (megaelectronvolts) daughter nuclide | Cr-59 decay mode | β^-n (electron + delayed neutron) Q-value | 6.697 MeV (megaelectronvolts) daughter nuclide | Cr-58
Radiation shielding
| Cf-255 | V-59 lead | 470 µm | 5.7 mm portland concrete | 1.49 mm | 26.2 mm water | 2.88 mm | 53.6 mm air | 255 cm | 43.7 m
Decay chain
Cf-255
Decay chain Cf-255
V-59
Decay chain V-59
Mass properties
| Cf-255 | V-59 atomic number (Z) | 98 | 23 mass number (A) | 255 | 59 neutron number | 157 | 36 atomic mass | 255.091046 u (unified atomic mass units) | 58.960207407 u (unified atomic mass units) mass excess | 84.809 MeV (megaelectronvolts) | -37.066562 MeV (megaelectronvolts) binding energy per nucleon | 7.438 MeV (megaelectronvolts) | 8.394581 MeV (megaelectronvolts)
Mass properties
Nearby isotopes
Nearby isotopes
Quantum properties
| Cf-255 spin parity J^π | 7/2^+ (atomic fermion)
Quantum properties