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Isotopes of the Element Cobalt

[Click for Main Data]         Proton Emission     Neutron Emission     Electron Emission     Positron Emission

Most of the isotope data on this site has been obtained from the National Nuclear Data Center.

Naturally Occurring Isotopes

Mass NumberNatural AbundanceHalf-life
59100%STABLE

Known Isotopes

Mass NumberHalf-lifeDecay ModeBranching Percentage
47No Data AvailableNo Data AvailableNo Data Available
48No Data AvailableNo Data AvailableNo Data Available
49No Data AvailableNo Data AvailableNo Data Available
5038.8 millisecondsElectron Capture100.00%
Electron Capture with
delayed Proton Emission
70.50%
Electron Capture with
delayed Double Proton Emission  
No Data Available
51> 200 nanosecondsElectron CaptureNo Data Available
52115 millisecondsElectron Capture100.00%
53240 millisecondsElectron Capture100.00%
53m247 millisecondsElectron Capture~ 98.50%
Proton Emission~ 1.50%
54193.28 milliseconds   Electron Capture100.00%
54m1.48 minutesElectron Capture100.00%
5517.53 hoursElectron Capture100.00%
5677.236 daysElectron Capture100.00%
57271.74 daysElectron Capture100.00%
5870.86 daysElectron Capture100.00%
58m9.10 hoursIsomeric Transition100.00%
59STABLE--
601925.28 daysBeta-minus Decay100.00%
60m10.467 minutesIsomeric Transition99.76%
Beta-minus Decay0.24%
611.650 hoursBeta-minus Decay100.00%
621.50 minutesBeta-minus Decay100.00%
62m13.91 minutesBeta-minus Decay> 99.00%
Isomeric Transition< 1.00%
6327.4 secondsBeta-minus Decay100.00%
640.30 secondsBeta-minus Decay100.00%
651.16 secondsBeta-minus Decay100.00%
660.20 secondsBeta-minus Decay100.00%
670.425 secondsBeta-minus Decay100.00%
680.199 secondsBeta-minus Decay100.00%
68m1.6 secondsBeta-minus Decay100.00%
69229 millisecondsBeta-minus Decay100.00%
70108 millisecondsBeta-minus Decay100.00%
70m0.50 secondsBeta-minus Decay100.00%
7180 millisecondsBeta-minus Decay100.00%
Beta-minus Decay with
delayed Neutron Emission
<= 6.00%
7259.9 millisecondsBeta-minus Decay100.00%
Beta-minus Decay with
delayed Neutron Emission
>= 6.00%
7341 millisecondsBeta-minus DecayNo Data Available
7425 millisecondsBeta-minus DecayNo Data Available
Beta-minus Decay with
delayed Neutron Emission
~ 18.00%
75> 150 nanosecondsBeta-minus Decay100.00%
76> 634 nanosecondsBeta-minus DecayNo Data Available
Beta-minus Decay with delayed
Double Neutron Emission
No Data Available
Beta-minus Decay with
delayed Neutron Emission
No Data Available