Argon-47 is a radioisotope of the chemical element argon, which has 29 neutrons in its atomic nucleus in addition to the element-specific 18 protons; the sum of the number of these atomic nucleus building blocks results in a mass number of 47.
According to a report from 1985, the radioactive isotope was discovered during the fragmentation of Krypton-86 rays (33 MeV/u) [1].
See also: List of individual Argon isotopes (and general data sources).
Half-life T½ = 1.23(3) s.
| Decay mode | Daughter | Probability | Decay energy | γ energy (intensity) |
|---|---|---|---|---|
| β- | 47K | > 99.8 % | 10.3447(18) MeV | |
| β-, n | 46K | < 0.2 % | 1.9753(14) MeV |
| Z | Isotone N = 29 | Isobar A = 47 |
|---|---|---|
| 13 | 42Al | |
| 14 | 43Si | |
| 15 | 44P | 47P |
| 16 | 45S | 47S |
| 17 | 46Cl | 47Cl |
| 18 | 47Ar | 47Ar |
| 19 | 48K | 47K |
| 20 | 49Ca | 47Ca |
| 21 | 50Sc | 47Sc |
| 22 | 51Ti | 47Ti |
| 23 | 52V | 47V |
| 24 | 53Cr | 47Cr |
| 25 | 54Mn | 47Mn |
| 26 | 55Fe | 47Fe |
| 27 | 56Co | 47Co |
| 28 | 57Ni | |
| 29 | 58Cu | |
| 30 | 59Zn | |
| 31 | 60Ga | |
| 32 | 61Ge | |
| 33 | 62As | |
| 34 | 63Se |
[1] - D. Guillemaud-Mueller et al.:
Production and identification of new neutron-rich fragments from 33 MeV/u 86Kr beam in the 18 ≤ Z ≤ 27 region.
In: Zeitschrift für Physik A, 322, (1985), DOI 10.1007/BF01412075.
[2] - W. Benenson et al.:
The masses of 51Ca and 47Ar.
In: Physics Letters B, 162, (1985), DOI 10.1016/0370-2693(85)91066-4.
Last update: 2026-01-06
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