![]() Seaborg and Margaret Melhase.ġ37Cs gamma spectrum. After being deposited onto the soil as radioactive fallout, it moves and spreads easily in the environment because of the high water solubility of caesium's most common chemical compounds, which are salts. 137Cs has a relatively low boiling point (671 ☌, 1240 F) and is volatilized easily when released suddenly at high temperature, as in the case of the Chernobyl nuclear accident and with atomic explosions, and can travel very long distances in the air. It is among the most problematic of the short-to-medium-lifetime fission products. Trace quantities also originate from natural fission of uranium-238. ), or radiocaesium, is a radioactive isotope of caesium that is formed as one of the more common fission products by the nuclear fission of uranium-235 and other fissionable isotopes in nuclear reactors and nuclear weapons. ![]()
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