About   |   More   |   Search
ChemLin Logo

Cobalt-66

Properties and data of the isotope 66Co.


Contents

See also: list of Cobalt isotopes.

 

General data

Name of the isotope:Cobalt-66; Co-66Symbol:66Co or 6627CoMass number A:66 (= number of nucleons)Atomic number Z:27 (= number of protons)Neutrons N:39Isotopic mass:65.939443(15) u (atomic weight of Cobalt-66)Nuclide mass:65.9246317 u (calculated nuclear mass without electrons)Mass excess:-56.40848 MeVMass defect:0.609764588 u (per nucleus)Nuclear binding energy:567.99205513 MeV (per nucleus)
8.60594023 MeV (average binding energy per nucleon)
Separation energy:SN = 5.295(14) MeV (first neutron)
SP = 12.480(15) MeV (first proton)
Half-life:0.20(2) sDecay constant λ:3.4657359027997 s-1Specific activity α:3.210946121538 × 10+22 Bq g-1
867823276091.49 Ci g-1
Spin and parity:
(nuclear angular momentum)
(3+)Year of discovery:1985

 

Radioactive Decay

Half-life T½ = 0.20(2) s respectively 2.0 × 10-1 seconds s.

Decay
mode
DaughterProbabilityDecay energyγ energy
(intensity)
β-66Ni100 %9.598(14) MeV

 

Parent Nuclides

Direct parent isotope is: 66Fe.

 

Nuclear Isomers

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

Nuclear IsomerExcitation EnergyHalf-lifeSpin
66m1Co175 keV1.21(1) μs(5+)
66m2Co642 keV100 μs(8-)

 

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 39) and isobaric (same nucleon number A = 66) with Cobalt-66. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

 

ZIsotone N = 39Isobar A = 66
2160Sc
2261Ti
2362V66V
2463Cr66Cr
2564Mn66Mn
2665Fe66Fe
2766Co66Co
2867Ni66Ni
2968Cu66Cu
3069Zn66Zn
3170Ga66Ga
3271Ge66Ge
3372As66As
3473Se66Se
3574Br66Br
3675Kr
3776Rb
3877Sr
3978Y
4079Zr
4281Mo

 

External data and identifiers

Adopted Levels, Gammas:NuDat 66Co

 


More Chemistry

isotopes

Social Media

Facebook

LinkedIn

Twitter


Last update: 2020-10-14


© 1996 - 2024 ChemLin