unstable isotope


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unstable isotope

[¦ən′stā·bəl ′ī·sə‚tōp]
(nuclear physics)
References in periodicals archive ?
This isotopic medley, including an excess of nickel-60 accompanied by iron-56, derives from the decay of iron-60, an unstable isotope that astronomers think could have formed only in the core of a massive star that exploded not long before the meteorites solidified.
The unstable isotope, carbon-14, is produced continuously in the upper atmosphere, mostly by the interaction of cosmic rays with nitrogen.
With about eight stable isotopes and more than 40 unstable isotopes, the gas, despite the limited availability and high price, is used for certain exclusive applications some of which are listed as follows: