Neon-25 is a radioisotope of the chemical element neon, which has 15 neutrons in its atomic nucleus in addition to the element-specific 10 protons; the sum of the number of these atomic nucleus building blocks results in a mass number of 25. The very short-lived, only artificially produced, unstable and thus radioactive nuclide has no practical significance; the study of 25Ne is exclusively for academic purposes and experimental research.
The discovery of the unstable isotope was reported in 1970. According to this, when a metallic sample of Thorium-232 was irradiated with neon-22 (174 MeV) in a heavy ion cyclotron, 400 events were recorded, which could be traced back to the formation of neon-25 with the help of a magnetic spectrometer [1].
See also: List of individual Neon isotopes (and general data sources).
Half-life T½ = 602(8) ms respectively 6.02 × 10-1 seconds s.
| Decay mode | Daughter | Probability | Decay energy | Details | γ energy (intensity) |
|---|---|---|---|---|---|
| β- | 25Na | 100 % | 7.322(29) MeV | β-: 1.293(14) [0.53(15) %] β-: 1.584(15) [1.2(3) %] β-: 2.309(15) [2.1(5) %] β-: 2.866(15) [19.5(20) %] β-: 3.349(15) [76.6(20) %] | 0.08953(10) MeV [95.4(8) %] 0.97977(16) MeV [18.1(19 %] 1.06930(19) MeV [2.3(4) %] 2.2020(10) MeV [1.1(3) %] |
Direct parent isotope is: 25F.
| Z | Isotone N = 15 | Isobar A = 25 |
|---|---|---|
| 5 | 20B | |
| 6 | 21C | |
| 7 | 22N | 25N |
| 8 | 23O | 25O |
| 9 | 24F | 25F |
| 10 | 25Ne | 25Ne |
| 11 | 26Na | 25Na |
| 12 | 27Mg | 25Mg |
| 13 | 28Al | 25Al |
| 14 | 29Si | 25Si |
| 15 | 30P | 25P |
| 16 | 31S | |
| 17 | 32Cl | |
| 18 | 33Ar | |
| 19 | 34K | |
| 20 | 35Ca | |
| 21 | 36Sc |
[1] - A. G. Artukh et al.:
New isotopes 23F, 24F, 25Ne and 26Ne, produced in nuclear reactions with heavy ions.
In: Physics Letters B, 31(3), (1970), DOI 10.1016/0370-2693(70)90130-9.
Last update: 2024-10-21
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