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Oxygen-13

Properties and data of the isotope 13O.


Contents

 

Oxygen-13 isotope

Oxygen-13 is a radioisotope of the chemical element oxygen, which has 5 neutrons in its atomic nucleus in addition to the element-specific 8 protons; the sum of the number of these atomic nucleus building blocks results in a mass number of 13. The very short-lived, only artificially produced, unstable and thus radioactive nuclide has no practical significance; the study of 13O is exclusively for academic purposes.

The report on the first detection of the proton-rich isotope appeared in 1963; oxygen-13 was created - along with other nuclear reaction products - by irradiating air with protons [1].

See also: list of Oxygen isotopes.

 

General data

Name of the isotope:Oxygen-13; O-13Symbol:13O or 138OMass number A:13 (= number of nucleons)Atomic number Z:8 (= number of protons)Neutrons N:5Isotopic mass:13.024815(10) u (atomic weight of Oxygen-13)Nuclide mass:13.0204264 u (calculated nuclear mass without electrons)Mass excess:23.11502 MeVMass defect:0.081109836 u (per nucleus)Nuclear binding energy:75.55332557 MeV (per nucleus)
5.81179427 MeV (average binding energy per nucleon)
Separation energy:SN = 16.870(26) MeV (first neutron)
SP = 5.8118(7) MeV (first proton)
Half-life:8.58(5) msDecay constant λ:80.786384680646 s-1Specific activity α:3.742361447014 × 10+24 Bq g-1
1.011449039733 × 10+14 Ci g-1
Spin and parity:
(nuclear angular momentum)
(3/2-)Isobaric spin: 3/2Magnetic dipole moment:μ(μN) = 1.3892(3)Quadrupole moment Q:0.0111(8) barn (100 fm2)Nuclear g-factor:gl = 0.92613333333333Mirror nucleus:Boron-13Year of discovery:1963

 

Radioactive Decay

Half-life T½ = 8.58(5) ms respectively 8.58 × 10-3 seconds s.

Decay
mode
DaughterProbabilityDecay energyγ energy
(intensity)
β+13N89.1(2) %17.77(1) MeV
β+, p12C10.9(2) %15.826(10) MeV

 

Parent Nuclides

Direct parent isotopes are: 15Ne, 14F.

 

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 5) and isobaric (same nucleon number A = 13) with Oxygen-13. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

 

ZIsotone N = 5Isobar A = 13
16H
27He
38Li13Li
49Be13Be
510B13B
611C13C
712N13N
813O13O
914F13F
1015Ne

 

External data and identifiers

Adopted Levels, Gammas:NuDat 13O

 

Literature and References

[1] - R. Barton et al.:
Observation of delayed proton radioactivity.
In: Canadian Journal of Physics, 41(12), (1963), DOI 10.1139/p63-201.

[2] - H. H. Knudsen, H. O. U. Fynbo, M. J. G. Borge et al.:
β-decay of 13O.
In: Physical Review C, 72, 044312, (2005), DOI 10.1103/PhysRevC.72.044312.

[3] - Li Zhi-Hong:
Astrophysical Rates for 12N(p,γ)13O Direct Capture Reaction.
In: Chinese Physics Letters, 23, 12, (2006), DOI 10.1088/0256-307X/23/12/027.

 


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Last update: 2024-10-03


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