Xenon-135
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Birth and death years unknown
Xenon-135 (135Xe) is an unstable isotope of xenon with a half-life of 9.14 hours, decaying to long-lived caesium-135. 135Xe is a fission product and it is the most powerful known neutron-absorbing nuclear poison (2 million barns; up to 3 million barns under reactor conditions), with a significant effect on nuclear reactor operation. The yield of xenon-135 from fission is about 6.6% (uranium) or 7.
* Calculated from Wikipedia data.
Accuracy is not guaranteed.
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| General | |
|---|---|
| Symbol | Xe |
| Names | xenon-135 |
| Protons (Z) | 54 |
| Neutrons (N) | 81 |
| Nuclide data | |
| Natural abundance | 0 (synthetic) |
| Half-life (t1/2) | 9.14±0.02 h |
| Spin | 3/2+ |
| Excess energy | −86413±4 keV |
| Nuclear binding energy | 8398.476±0.028 keV |
| Decay products | Cs |
| Decay modes | |
| Decay mode | Decay energy (MeV) |
| Beta decay | 1.165 |
| Isotopes of xenon Complete table of nuclides | |
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