Cobalt-62m
Properties and data of the isotope 62mCo.
See also: list of Cobalt isotopes.
General data
Name of the isotope:Cobalt-62m; Co-62mSymbol:62mCo or 62m27CoMass number A:62 (= number of nucleons)Atomic number Z:27 (= number of protons)Neutrons N:35Isotopic mass:61.934058(20) u (atomic weight of Cobalt-62m)
Excitation energy: 22(5) keVNuclide mass:61.9192467 u (calculated nuclear mass without electrons)Mass excess:-61.42458 MeVMass defect:0.580489924 u (per nucleus)Nuclear binding energy:540.72288127 MeV (per nucleus)
8.72133679 MeV (average binding energy per nucleon)Half-life:13.86(9) minDecay constant λ:0.00083351031813365 s-1Specific activity α:8.228715645920 × 10+18 Bq g-1
222397720.16002 Ci g-1Spin and parity:
(nuclear angular momentum)(5)+
Radioactive Decay
Half-life T½ = 13.86(9) min (minutes) respectively 8.316 × 102 seconds s.
Decay mode | Daughter | Probability | Decay energy | γ energy (intensity) |
---|
β- | 62Ni | > 99 % | | |
Iso | 62Ni | < 1 % | | |
Nuclear Isomers
Nuclear isomers or excited states with the activation energy in keV related to the ground state.
Nuclear Isomer | Excitation Energy | Half-life | Spin |
---|
62Co | | 1.54(10) min | (2)+ |
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 35) and isobaric (same nucleon number A = 62) with Cobalt-62m. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
Z | Isotone N = 35 | Isobar A = 62 |
18 | 53Ar | |
19 | 54K | |
20 | 55Ca | |
21 | 56Sc | |
22 | 57Ti | 62Ti |
23 | 58V | 62V |
24 | 59Cr | 62Cr |
25 | 60Mn | 62Mn |
26 | 61Fe | 62Fe |
27 | 62Co | 62Co |
28 | 63Ni | 62Ni |
29 | 64Cu | 62Cu |
30 | 65Zn | 62Zn |
31 | 66Ga | 62Ga |
32 | 67Ge | 62Ge |
33 | 68As | 62As |
34 | 69Se | |
35 | 70Br | |
36 | 71Kr | |
37 | 72Rb | |
38 | 73Sr | |
External data and identifiers
Last update: 2020-10-14
Perma link: https://www.chemlin.org/isotope/cobalt-62m
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