Magnesium-19 is a radioisotope of the chemical element magnesium, which has 7 neutrons in its atomic nucleus in addition to the element-specific 12 protons; the sum of the number of these atomic nucleus building blocks results in a mass number of 19. The very short-lived, only artificially produced, unstable and thus radioactive nuclide has no practical significance; the study of 19Mg is exclusively for academic purposes.
The first observation of the proton-rich isotope was first reported in 2007 [1].
See also: list of Magnesium isotopes.
Half-life T½ = 5(3) ps respectively 5 × 10-12 seconds s.
Decay mode | Daughter | Probability | Decay energy | γ energy (intensity) |
---|---|---|---|---|
2p | 17Ne | 100 % |
Z | Isotone N = 7 | Isobar A = 19 |
---|---|---|
2 | 9He | |
3 | 10Li | |
4 | 11Be | |
5 | 12B | 19B |
6 | 13C | 19C |
7 | 14N | 19N |
8 | 15O | 19O |
9 | 16F | 19F |
10 | 17Ne | 19Ne |
11 | 18Na | 19Na |
12 | 19Mg | 19Mg |
[1] - I. Mukha et al.:
Observation of Two-Proton Radioactivity of 19Mg by Tracking the Decay Products.
In: Physical Review Letters, 99, 182501, (2007), DOI 10.1103/PhysRevLett.99.182501.
[2] - I. Mukha et al.:
Revisit to Two-Proton Radioactivity of 19Mg and Observation of Two-Proton Decay of 30Ar.
In: Nuclear Physics Review, 33(2), (2016), DOI 10.11804/NuclPhysRev.33.02.197.
Last update: 2024-11-04
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