Thallium-213 is a radioisotope of the chemical element thallium, which has 132 neutrons in its atomic nucleus in addition to the element-specific 81 protons; the sum of the number of these atomic nucleus building blocks results in a mass number of 213. The very short-lived, only artificially produced, unstable and thus radioactive nuclide has no practical significance; the study of 213Tl is exclusively for academic purposes and experimental research.
The isotope thallium-213 was first reported in 2010. According to the research report, thallium-213 was produced — along with other isotopes — by nuclear fragmentation processes during the irradiation of a beryllium template with a 670 MeV/u beam of uranium-238 ions. The new nuclide was identified via its mass signal and its decay behavior, which was determined by time-resolved Schottky spectrometry [1].
See also: List of individual Thallium isotopes (and general data sources).
Half-life T½ = 23.8(44) s respectively 2.38 × 101 seconds s.
| Decay mode | Daughter | Probability | Decay energy | γ energy (intensity) |
|---|---|---|---|---|
| β- | 213Pb | 92.4 % | 4.987(28) MeV | |
| β-, n | 212Pb | 7.6 % | 1.261(27) MeV |
| Z | Isotone N = 132 | Isobar A = 213 |
|---|---|---|
| 80 | 212Hg | 213Hg |
| 81 | 213Tl | 213Tl |
| 82 | 214Pb | 213Pb |
| 83 | 215Bi | 213Bi |
| 84 | 216Po | 213Po |
| 85 | 217At | 213At |
| 86 | 218Rn | 213Rn |
| 87 | 219Fr | 213Fr |
| 88 | 220Ra | 213Ra |
| 89 | 221Ac | 213Ac |
| 90 | 222Th | 213Th |
| 91 | 223Pa | 213Pa |
| 92 | 224U | |
| 93 | 225Np |
[1] - L. Chen, W. R. Plaß, H. Geissel et al.:
Discovery and investigation of heavy neutron-rich isotopes with time-resolved Schottky spectrometry in the element range from thallium to actinium.
In: Physics Letters B, 691, 5, (2010), DOI 10.1016/j.physletb.2010.05.078.
Last update: 2025-11-20
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