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.
Half-life T½ = 8.58(5) ms respectively 8.58 × 10-3 seconds s.
Decay mode | Daughter | Probability | Decay energy | γ energy (intensity) |
---|---|---|---|---|
β+ | 13N | 89.1(2) % | 17.77(1) MeV | |
β+, p | 12C | 10.9(2) % | 15.826(10) MeV |
Direct parent isotopes are: 15Ne, 14F.
Z | Isotone N = 5 | Isobar A = 13 |
---|---|---|
1 | 6H | |
2 | 7He | |
3 | 8Li | 13Li |
4 | 9Be | 13Be |
5 | 10B | 13B |
6 | 11C | 13C |
7 | 12N | 13N |
8 | 13O | 13O |
9 | 14F | 13F |
10 | 15Ne |
[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.
Last update: 2024-10-03
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