Yttrium-90 () is a radioactive isotope of yttrium. Yttrium-90 has found a wide range of uses in radiation therapy to treat some forms of cancer. It is sometimes called radioyttrium (as might be other radioisotopes of the element).
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Yttrium-90 () is a radioactive isotope of yttrium. Yttrium-90 has found a wide range of uses in radiation therapy to treat some forms of cancer. It is sometimes called radioyttrium (as might be other radioisotopes of the element).
==Decay== undergoes β− decay to zirconium-90 with a half-life of 64.05 hours and a decay energy of 2.28 MeV with an average beta energy of 0.9336 MeV. Although it decays to the 1.7 MeV excited 0+ state of 90Zr with frequency more than 0.01%, emission of a gamma ray is forbidden and the normal decay of that state is internal conversion; the alternative of pair production has been the subject of study for potential use, despite its rarity. The useful photons emitted through this isotope's decay are instead bremsstrahlung X-rays.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).