Germanium-59

Properties and data of the isotope ⁵⁹Ge.

Contents

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:S_N = 16.86(64) MeV (first neutron)Half-life:13.3(17) msDecay constant λ:52.116329365409 s^-1Specific activity α:5.41123925071 × 10⁺²³ Bq g^-1
14624970947873 Ci g^-1Spin and parity:
(nuclear angular momentum)7/2-Mirror nucleus:Cobalt-59

Radioactive Decay

Half-life T_½ = 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.

Z	Isotone N = 27	Isobar A = 59
11	³⁸Na
12	³⁹Mg
13	⁴⁰Al
14	⁴¹Si
15	⁴²P
16	⁴³S
17	⁴⁴Cl
18	⁴⁵Ar
19	⁴⁶K	⁵⁹K
20	⁴⁷Ca
21	⁴⁸Sc	⁵⁹Sc
22	⁴⁹Ti	⁵⁹Ti
23	⁵⁰V	⁵⁹V
24	⁵¹Cr	⁵⁹Cr
25	⁵²Mn	⁵⁹Mn
26	⁵³Fe	⁵⁹Fe
27	⁵⁴Co	⁵⁹Co
28	⁵⁵Ni	⁵⁹Ni
29	⁵⁶Cu	⁵⁹Cu
30	⁵⁷Zn	⁵⁹Zn
31	⁵⁸Ga	⁵⁹Ga
32	⁵⁹Ge	⁵⁹Ge