Oxygen-28 is a radioisotope of the chemical element oxygen, which has 20 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 28. The very short-lived, only artificially produced, unstable and thus radioactive nuclide has no practical significance; the study of 28O is exclusively for academic purposes.
The following data are preliminary and calculated based on theoretical considerations.
See also: list of Oxygen isotopes.
Half-life T½ = < 100 ns respectively 1 × 10-7 seconds s.
Decay mode | Daughter | Probability | Decay energy | γ energy (intensity) |
---|---|---|---|---|
2n | 26O | ? |
Z | Isotone N = 20 | Isobar A = 28 |
---|---|---|
8 | 28O | 28O |
9 | 29F | 28F |
10 | 30Ne | 28Ne |
11 | 31Na | 28Na |
12 | 32Mg | 28Mg |
13 | 33Al | 28Al |
14 | 34Si | 28Si |
15 | 35P | 28P |
16 | 36S | 28S |
17 | 37Cl | 28Cl |
18 | 38Ar | |
19 | 39K | |
20 | 40Ca | |
21 | 41Sc | |
22 | 42Ti | |
23 | 43V | |
24 | 44Cr | |
25 | 45Mn | |
26 | 46Fe | |
27 | 47Co | |
28 | 48Ni |
[1] - H. Sakurai et al.:
Evidence for particle stability of 31F and particle instability of 25N and 28O.
In: Physics Letters B, 448(3-4), (1999), DOI 10.1016/S0370-2693(99)00015-5.
[2] - Y. Kondo, N. L. Achouri, H. Al Falou et al.:
First observation of 28O.
In: Nature, (2023), DOI 10.1038/s41586-023-06352-6.
Last update: 2024-10-10
Perma link: https://www.chemlin.org/isotope/oxygen-28
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