Cobalt-66m1
Properties and data of the isotope 66m1Co.
See also: list of Cobalt isotopes.
General data
Name of the isotope:Cobalt-66m1; Co-66m1Symbol:66m1Co or 66m127CoMass 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-66m1)
Excitation energy: 175 keVNuclide 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)Half-life:1.21(1) μsDecay constant λ:572848.90955367 s-1Specific activity α:5.307348961220 × 10+27 Bq g-1
1.434418638167 × 10+17 Ci g-1Spin and parity:
(nuclear angular momentum)(5+)
Radioactive Decay
Half-life T½ = 1.21(1) μs respectively 1.21 × 10-6 seconds s.
Decay mode | Daughter | Probability | Decay energy | γ energy (intensity) |
---|
Iso | | | | |
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 |
---|
66Co | | 0.20(2) s | (3+) |
66m2Co | 642 keV | 100 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-66m1. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
Z | Isotone N = 39 | Isobar A = 66 |
21 | 60Sc | |
22 | 61Ti | |
23 | 62V | 66V |
24 | 63Cr | 66Cr |
25 | 64Mn | 66Mn |
26 | 65Fe | 66Fe |
27 | 66Co | 66Co |
28 | 67Ni | 66Ni |
29 | 68Cu | 66Cu |
30 | 69Zn | 66Zn |
31 | 70Ga | 66Ga |
32 | 71Ge | 66Ge |
33 | 72As | 66As |
34 | 73Se | 66Se |
35 | 74Br | 66Br |
36 | 75Kr | |
37 | 76Rb | |
38 | 77Sr | |
39 | 78Y | |
40 | 79Zr | |
42 | 81Mo | |
External data and identifiers
Last update: 2020-10-14
Perma link: https://www.chemlin.org/isotope/cobalt-66m1
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