See also: List of individual Germanium isotopes (and general data sources).
General data
Name of the isotope:Germanium-59; Ge-59Symbol:59Ge or 5932GeMass number A:59 (= number of nucleons)Atomic number Z:32 (= number of protons)Neutrons N:27Nucleon pairing (Z - N):even - oddNuclear ratio (N/Z ratio):0.84375 (= neutron-proton ratio)Neutron excess (N-Z):-5Isotopic mass:58.98296(43) u (atomic weight of Germanium-59)Nuclide mass:58.965406 u (calculated nuclear mass without electrons)Mass excess:-15.87266 MeVMass defect:0.50139375600001 u (per nucleus)Nuclear binding energy:467.04527535 MeV (per nucleus) 7.91602162 MeV (average binding energy per nucleon)Separation energy:SN = 16.86(64) MeV (first neutron)Half-life:13.3(17) msDecay constant λ:52.116329365409 s-1Specific activity α:5.321060037221 × 10+23 Bq g-1 14381243343841 Ci g-1Spin and parity: (nuclear angular momentum)7/2-Mirror nucleus:Cobalt-59
Radioactive Decay
Half-life T½ = 13.3(17) ms respectively 1.33 × 10-2 seconds s.
Decay mode
Daughter
Probability
Decay energy
γ energy (intensity)
2 p
57Zn
< 0.2 %
EC/β+
58Ga
?
17.89(43) MeV
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 27) and isobaric (same nucleon number A = 59) with Germanium-59. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
