Input interpretation
Mn-54 (manganese-54) | Mn-61 (manganese-61)
Decay properties
| Mn-54 | Mn-61 half-life | 312.12 days (311.97 to 312.27 days) | 670 ms (622 to 718 ms) mean lifetime | 450.29 days (450 to 450.6 days) | 0.967 s (0.9082 to 1.025 s) decay constant | 2.5703×10^-8 per second | 1.03 per second specific activity | 286.96 TBq/g | 1.02×10^10 TBq/g width | 1.1726×10^-23 eV | 6.81×10^-16 eV decay modes | ϵ (electron capture) | β^- (electron emission) | e^+ (positron emission) | β^- (electron emission) | β^-n (electron + delayed neutron) final decay products | Cr-54 (100%) | Fe-54 (2.9×10^-6) | Ni-61 (100%) | Ni-60 (0)
Biological properties
| Mn-54 biological half-life | 25 days biological lifetime | 36 days effective half-life | 23 days effective lifetime | 33 days external exposure advisory | external hazard critical organs | liver | gastrointestinal tract
Decay modes
Mn-54
decay mode | ϵ (electron capture) branching ratio | 100% Q-value | 1.37718 MeV (megaelectronvolts) daughter nuclide | Cr-54 decay mode | β^- (electron emission) branching ratio | 2.9×10^-6 Q-value | 697.09 keV (kiloelectronvolts) daughter nuclide | Fe-54 decay mode | e^+ (positron emission) branching ratio | 1.28×10^-9 daughter nuclide | Cr-54
Mn-61
decay mode | β^- (electron emission) branching ratio | 100% Q-value | 7.366 MeV (megaelectronvolts) daughter nuclide | Fe-61 decay mode | β^-n (electron + delayed neutron) Q-value | 1.785 MeV (megaelectronvolts) daughter nuclide | Fe-60
Radiation shielding
| Mn-54 lead | 4.36 mm portland concrete | 18.5 mm water | 37.2 mm air | 30.9 m
Decay chain
Mn-54
Decay chain Mn-54
Mn-61
Decay chain Mn-61
Mass properties
| Mn-54 | Mn-61 atomic number (Z) | 25 | 25 mass number (A) | 54 | 61 neutron number | 29 | 36 atomic mass | 53.940358854 u (unified atomic mass units) | 60.944652638 u (unified atomic mass units) mass excess | -55.55537 MeV (megaelectronvolts) | -51.555736 MeV (megaelectronvolts) binding energy per nucleon | 8.737923 MeV (megaelectronvolts) | 8.595859 MeV (megaelectronvolts)
Mass properties
Nearby isotopes
Nearby isotopes
Quantum properties
| Mn-54 | Mn-61 spin parity J^π | 3^+ (atomic fermion) | 5/2^- (atomic boson) magnetic moment | 3.2819 μ_N | (unknown) electric quadrupole moment | 0.33 eb (electron barns) | (unknown)
Quantum properties