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Cobalt-73

Properties and data of the isotope 73Co.


Content

See also: list of Cobalt isotopes.

 

General data

Name of the isotope:Cobalt-73; Co-73Symbol:73Co or 7327CoMass number A:73 (= number of nucleons)Atomic number Z:27 (= number of protons)Neutrons N:46Isotopic mass:72.95983(43) u (atomic weight of Cobalt-73)Nuclide mass:72.9450187 u (calculated nuclear mass without electrons)Mass excess:-37.41811 MeVMass defect:0.65003200000001 u (per nucleus)Nuclear binding energy:605.50090781 MeV (per nucleus)
8.29453298 MeV (average binding energy per nucleon)
Separation energy:SN = 5.29(56) MeV (first neutron)
SP = 16.28(64) MeV (first proton)
Half-life:40.7(13) msDecay constant λ:17.242467178108 s-1Specific activity α:1.442174529436 × 10+23 Bq g-1
3897768998476.2 Ci g-1
Spin and parity:
(nuclear angular momentum)
(7/2-)~Year of discovery:1995

 

Radioactive Decay

Half-life T½ = 40.7(13) ms respectively 4.02 × 10-2 seconds s.

Decay modeDaughterProbabilityDecay energyγ energy
(intensity)
β-73Ni12.69(40) MeV
β-, n72Ni22(8) %8.74(40) MeV
β-, 2n71Ni?

 

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 46) and isobaric (same nucleon number A = 73) with Cobalt-73. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

 

OZIsotone N = 46Isobar A = 73
2571Mn
2672Fe73Fe
2773Co73Co
2874Ni73Ni
2975Cu73Cu
3076Zn73Zn
3177Ga73Ga
3278Ge73Ge
3379As73As
3480Se73Se
3581Br73Br
3682Kr73Kr
3783Rb73Rb
3884Sr73Sr
3985Y
4086Zr
4187Nb
4288Mo
4389Tc
4490Ru
4591Rh
4692Pd
4793Ag
4894Cd

 

External data and identifiers

Adopted Levels, Gammas:NuDat 73Co

 


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Last update: 2020-10-14


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