strontium-90

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strontium-90

[′strän·tē·əm ′nīn·tē]
(nuclear physics)
A poisonous, radioactive isotope of strontium; 28-year half life with β radiation; derived from reactor-fuel fission products; used in thickness gages, medical treatment, phosphor activation, and atomic batteries.
References in periodicals archive ?
Sr-90, which emits a 0.546 MeV beta particle, has chemical similarity to calcium.
Dubbed the Tooth Fairy Project, (see Your Health, "Glowing in the Dark," May/June 2002), researchers report higher levels of Sr-90 near nuclear power plants, including St.
of Washington's Jaromir Ruzicka to develop a sequential injection-analysis system that rapidly separates Sr-90 from other radioisotopes in nuclear waste.
EPlus is also offered with SR-90 or KR-85 beta gauges.