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Cobalt-62

Properties and data of the isotope 62Co.


Content

See also: list of Cobalt isotopes.

 

General data

Name of the isotope:Cobalt-62; Co-62Symbol:62Co or 6227CoMass 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-62)Nuclide 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)
Separation energy:SN = 6.598(19) MeV (first neutron)
SP = 9.793(19) MeV (first proton)
Half-life:1.54(10) minDecay constant λ:0.0075015928632029 s-1Specific activity α:7.405844081328 × 10+19 Bq g-1
2001579481.4401 Ci g-1
Spin and parity:
(nuclear angular momentum)
(2)+Year of discovery:1949

 

Radioactive Decay

Half-life T½ = 1.54(10) min (minutes) respectively 9.24 × 101 seconds s.

Decay modeDaughterProbabilityDecay energyγ energy
(intensity)
β-62Ni100 %5.322(19) MeV

 

Parent Nuclides

Direct parent isotope is: 62Fe.

 

Nuclear Isomers

Nuclear isomers or excited states with the activation energy in keV related to the ground state.

Nuclear IsomerExcitation EnergyHalf-lifeSpin
62mCo22(5) keV13.86(9) min(5)+

 

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-62. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

 

OZIsotone N = 35Isobar A = 62
1853Ar
1954K
2055Ca
2156Sc
2257Ti62Ti
2358V62V
2459Cr62Cr
2560Mn62Mn
2661Fe62Fe
2762Co62Co
2863Ni62Ni
2964Cu62Cu
3065Zn62Zn
3166Ga62Ga
3267Ge62Ge
3368As62As
3469Se
3570Br
3671Kr
3772Rb
3873Sr

 

External data and identifiers

Adopted Levels, Gammas:NuDat 62Co

 


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Last update: 2020-10-14


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