About   |   More   |   Search
ChemLin Logo

Cobalt-53m

Properties and data of the isotope 53mCo.


Contents

See also: list of Cobalt isotopes.

 

General data

Name of the isotope:Cobalt-53m; Co-53mSymbol:53mCo or 53m27CoMass number A:53 (= number of nucleons)Atomic number Z:27 (= number of protons)Neutrons N:26Isotopic mass:52.9542032(18) u (atomic weight of Cobalt-53m)
Excitation energy: 3197(29) keV
Nuclide mass:52.9393919 u (calculated nuclear mass without electrons)Mass excess:-42.65944 MeVMass defect:0.48236048 u (per nucleus)Nuclear binding energy:449.31589296 MeV (per nucleus)
8.47765836 MeV (average binding energy per nucleon)
Half-life:247(12) msDecay constant λ:2.8062638889067 s-1Specific activity α:3.249945467144 × 10+22 Bq g-1
878363639768.7 Ci g-1
Spin and parity:
(nuclear angular momentum)
(19/2-)

 

Radioactive Decay

Half-life T½ = 247(12) ms respectively 2.47 × 10-1 seconds s.

Decay
mode
DaughterProbabilityDecay energyγ energy
(intensity)
EC β+53Fe98.5 %
p52Fe1.5 %

 

Nuclear Isomers

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

Nuclear IsomerExcitation EnergyHalf-lifeSpin
53Co240(9) ms(7/2-)

 

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 26) and isobaric (same nucleon number A = 53) with Cobalt-53m. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

 

ZIsotone N = 26Isobar A = 53
1137Na
1238Mg
1339Al
1440Si
1541P
1642S
1743Cl
1844Ar53Ar
1945K53K
2046Ca53Ca
2147Sc53Sc
2248Ti53Ti
2349V53V
2450Cr53Cr
2551Mn53Mn
2652Fe53Fe
2753Co53Co
2854Ni53Ni
2955Cu53Cu
3056Zn

 

External data and identifiers

Adopted Levels, Gammas:NuDat 53Co

 


More Chemistry

isotopes

Social Media

Facebook

LinkedIn

Twitter


Last update: 2020-10-14


© 1996 - 2024 ChemLin