Strontium-90
Radioactive isotope of strontium / From Wikipedia, the free encyclopedia
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Strontium-90 (90
Sr
) is a radioactive isotope of strontium produced by nuclear fission, with a half-life of 28.8 years. It undergoes β− decay into yttrium-90, with a decay energy of 0.546 MeV.[2] Strontium-90 has applications in medicine and industry and is an isotope of concern in fallout from nuclear weapons, nuclear weapons testing, and nuclear accidents.[3]
This article is about the chemical isotope. For the band, see Strontium 90 (band).
Quick Facts General, Symbol ...
General | |
---|---|
Symbol | 90Sr |
Names | strontium-90, 90Sr, Sr-90 |
Protons (Z) | 38 |
Neutrons (N) | 52 |
Nuclide data | |
Natural abundance | syn |
Half-life (t1/2) | 28.79 years |
Isotope mass | 89.9077279(16)[1] Da |
Decay products | 90Y |
Decay modes | |
Decay mode | Decay energy (MeV) |
Beta decay | 0.546 |
Isotopes of strontium Complete table of nuclides |
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