See also: List of individual Germanium isotopes (and general data sources).
General data
Name of the isotope:Germanium-63; Ge-63Symbol:63Ge or 6332GeMass number A:63 (= number of nucleons)Atomic number Z:32 (= number of protons)Neutrons N:31Nucleon pairing (Z - N):even - oddNuclear ratio (N/Z ratio):0.96875 (= neutron-proton ratio)Neutron excess (N-Z):-1Isotopic mass:62.94963(4) u (atomic weight of Germanium-63)Nuclide mass:62.932076 u (calculated nuclear mass without electrons)Mass excess:-46.91935 MeVMass defect:0.56938342 u (per nucleus)Nuclear binding energy:530.37723943 MeV (per nucleus) 8.41868634 MeV (average binding energy per nucleon)Separation energy:SN = 13.25(14) MeV (first neutron) SP = 22.2(4) MeV (first proton)Half-life:150(9) msDecay constant λ:4.620981203733 s-1Specific activity α:4.420708947486 × 10+22 Bq g-1 1194786202023.3 Ci g-1Spin and parity: (nuclear angular momentum)3/2-Mirror nucleus:Gallium-63Year of discovery:1991
Radioactive Decay
Half-life T½ = 150(9) ms respectively 1.50 × 10-1 seconds s.
Decay mode
Daughter
Probability
Decay energy
γ energy (intensity)
EC/β+
63Ga
100 %
9.63(40) MeV
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 31) and isobaric (same nucleon number A = 63) with Germanium-63. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
