Cerium-153 is a radioisotope of the chemical element cerium, which has 95 neutrons in its atomic nucleus in addition to the element-specific 58 protons; the sum of the number of these atomic nucleus building blocks results in a mass number of 153. The very short-lived, only artificially produced, unstable and thus radioactive nuclide has no practical significance; the study of 153Ce is exclusively for academic purposes.
The neutron-rich isotope cerium-153 was produced in 1994 by bombarding a lead-208 target with a uranium-235 beam of 750 MeV per nucleon. Identification was achieved by adjusting the magnetic stiffness of the fragment separator and by measuring energy loss and time-of-flight [1].
See also: List of individual Cerium isotopes (and general data sources).
Half-life T½ = 865(25) ms respectively 8.65 × 10-1 seconds s.
| Decay mode | Daughter | Probability | Decay energy | γ energy (intensity) |
|---|---|---|---|---|
| β- | 153Pr | ca. 100 % | 6.660(200) MeV | |
| β-, n | ? | 0.78(20) MeV |
Direct parent isotope is: 153La.
| Z | Isotone N = 95 | Isobar A = 153 |
|---|---|---|
| 55 | 150Cs | |
| 56 | 151Ba | 153Ba |
| 57 | 152La | 153La |
| 58 | 153Ce | 153Ce |
| 59 | 154Pr | 153Pr |
| 60 | 155Nd | 153Nd |
| 61 | 156Pm | 153Pm |
| 62 | 157Sm | 153Sm |
| 63 | 158Eu | 153Eu |
| 64 | 159Gd | 153Gd |
| 65 | 160Tb | 153Tb |
| 66 | 161Dy | 153Dy |
| 67 | 162Ho | 153Ho |
| 68 | 163Er | 153Er |
| 69 | 164Tm | 153Tm |
| 70 | 165Yb | 153Yb |
| 71 | 166Lu | 153Lu |
| 72 | 167Hf | 153Hf |
| 73 | 168Ta | |
| 74 | 169W | |
| 75 | 170Re | |
| 76 | 171Os | |
| 77 | 172Ir | |
| 78 | 173Pt | |
| 79 | 174Au | |
| 80 | 175Hg | |
| 81 | 176Tl |
[1] - M. Bernas, S. Czajkowski, P. Armbruster et al.:
Projectile fission at relativistic velocities: a novel and powerful source of neutron-rich isotopes well suited for in-flight isotopic separation.
In: Physics Letters B, 331, (1994), DOI 10.1016/0370-2693(94)90937-7.
Last update: 2025-10-26
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