Beryllium-8
| General | |
|---|---|
| Symbol | 8Be |
| Names | beryllium-8 |
| Protons (Z) | 4 |
| Neutrons (N) | 4 |
| Nuclide data | |
| Natural abundance | 0 [a] |
| Half-life (t1/2) | (8.19±0.37)×10−17 s[2] |
| Isotope mass | 8.00530510(4)[3] Da |
| Spin | 0 |
| Decay products | 4He |
| Decay modes | |
| Decay mode | Decay energy (MeV) |
| α | 0.09184(4) |
| Isotopes of beryllium Complete table of nuclides | |
Beryllium-8 (8Be, Be-8) is a radionuclide with 4 neutrons and 4 protons. It is an unbound resonance of two alpha particles and nominally an isotope of beryllium. This has important ramifications in stellar nucleosynthesis as it creates a bottleneck in the creation of heavier chemical elements. The properties of 8Be have also led to speculation on the fine tuning of the universe, and theoretical investigations on cosmological evolution had 8Be been stable.
- ^ Cite error: The named reference
otheruwas invoked but never defined (see the help page). - ^ Kondev, F. G.; Wang, M.; Huang, W. J.; Naimi, S.; Audi, G. (2021). "The NUBASE2020 evaluation of nuclear properties" (PDF). Chinese Physics C. 45 (3): 030001. doi:10.1088/1674-1137/abddae.
- ^ Wang, Meng; Huang, W.J.; Kondev, F.G.; Audi, G.; Naimi, S. (2021). "The AME 2020 atomic mass evaluation (II). Tables, graphs and references*". Chinese Physics C. 45 (3): 030003. doi:10.1088/1674-1137/abddaf.
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