See also: List of individual Germanium isotopes (and general data sources).
General data
Name of the isotope:Germanium-75m1; Ge-75m1Symbol:75m1Ge or 75m132GeMass number A:75 (= number of nucleons)Atomic number Z:32 (= number of protons)Neutrons N:43Nucleon pairing (Z - N):even - oddNuclear ratio (N/Z ratio):1.34375 (= neutron-proton ratio)Neutron excess (N-Z):11Excitation energy:139.69(3) KeVIsotopic mass:74.92285837(5) u (atomic weight of Germanium-75m1)Nuclide mass:74.9053044 u (calculated nuclear mass without electrons)Mass excess:-71.85697 MeVMass defect:0.700134042 u (per nucleus)Nuclear binding energy:652.17065932 MeV (per nucleus) 8.69560879 MeV (average binding energy per nucleon)Half-life:47.7(5) sDecay constant λ:0.014531387433123 s-1Specific activity α:1.168002162013 × 10+20 Bq g-1 3156762600.0354 Ci g-1Spin and parity: (nuclear angular momentum)7/2+
Radioactive Decay
Half-life T½ = 47.7(5) s respectively 4.77 × 101 seconds s.
Decay mode
Daughter
Probability
Decay energy
γ energy (intensity)
β-
75As
0.030(6) %
Iso
75Ge
99.970(6) %
Nuclear Isomers
Nuclear isomers or excited states with the activation energy in keV related to the ground state.
The following table shows the atomic nuclei that are isotonic (same neutron number N = 43) and isobaric (same nucleon number A = 75) with Germanium-75m1. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
