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 ?
Radiotherapy is rarely used for non-resectable cases, including plesiotherapy with strontium-90 for a lingual plasmacytoma in a dog (WARE & GIEGER, 2011; VAIL, 2013).
The seawater samples were analysed for tritium (hydrogen-3), strontium-90, caesium-134 and caesium-137 by the Japan Chemical Analysis Center (JCAC), the Geo Science Laboratory (GSL), Japan, KANSO Co.
It is a kind of a small nuclear reactor that runs on a material called strontium-90, which can generate a high level of energy over many years.
During a fire, radionuclides like caesium-137, strontium-90 and plutonium rise into the air and travel with the wind," Anton Beneslavsky, a firefighter for Greenpeace Russia who has helped to put out fires in areas near the Chernobyl nuclear disaster, (http://www.
In 1972, about 19,000 gallons (71,920 liters) of highly radioactive sodium bearing waste that involved the tritium, strontium-90, cesium-137 and plutonium-238 spilled during a failed underground transfer at the Idaho Nuclear Technology and Engineering Center's tank farm.
Environmental groups have said the material, a byproduct of the creation of medical radioisotopes at Canadian Nuclear Laboratories, includes cesium-137, strontium-90 and plutonium-239.
There, she conducted groundbreaking research on strontium-90, a radioactive substance present in fallout from nuclear weapons testing and which had been found in baby teeth.
According to scientific tests conducted on behalf of the environmental campaigning group, overall contamination from key isotopes such as caesium-137 and strontium-90 has fallen somewhat, but lingers, especially in places such as forests.
Seager's book includes chapters on Carson's life as a scientist and writer of nature, the post World War II scares such as Strontium-90 and Thalidomide that made her claims about DDT so credible, the public health issues she explores, the desirability of biological controls, and the recent politicised attacks on Carson and Silent Spring.
Rainwater within that perimeter had up to 8,300 becquerels per liter of beta particle-emitting radioactive substances, such as strontium-90.
In the 1950s and the early '60s, when atmospheric nuclear testing was resulting in Strontium-90 being found in babies' teeth and mothers' milk, people were outraged that they should be subjected to this kind of stuff.
Tepco said last week that groundwater drawn from a monitoring well last July contained a record 5 million becquerels per litre of dangerous radioactive strontium-90 -- more than five times the total beta radiation reading of 900,000 becquerels per litre recorded in the well, which is around 25 metres from the ocean.