strontium-90

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strontium-90

n.
The strontium isotope with mass 90, having a half-life of 28 years, used for its high-energy beta emission in certain nuclear electric power sources and constituting a radiation hazard in fallout.
References in periodicals archive ?
Main fission products like Cs-137 & Sr-90 present in the waste are recovered using in house developed technologies and deployed for societal applications covering medical applications, external irradiators and other medical applications.
uses either a Kr-85 or Sr-90 source designed to offer users accurate, higher-resolution basis-weight readings on webs and films between 6 and 7000 g/m2.
The total exposure dose rate of reference organisms resulting from ionising radiation of technogenic radionuclides in Lake Druksiai Insect larvae H-3, Pu-239 <1% Cs-137 40% Cs-134 1% C-14 2% Mn-54 4% Co-60 42% Sr-90 10% Vascular plant H-3, Pu-239 <1% Cs-137 40% Cs-134 1% C-14 2% Mn-54 4% Co-60 43% Sr-90 9% Crustacean H-3, Pu-239 <1% Cs-137 40% Cs-134 1% C-14 3% Mn-54 4% Co-60 41% Sr-90 1% Gastropod H-3, Pu-239 <1% Cs-137 38% Cs-134 1% C-14 4% Mn-54 4% Co-60 46% Sr-90 6% Note: Table made from pie chart.
The activities in soil for Sr-89 ranged from 13 and 260 Bq/kg and for Sr-90 between 3.
31) However, we do not believe that radiation treatment with Sr-90 would have been efficacious in this case because of the tumor location.
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.