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cesium-137 |
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cesium-137 (137Cs), a radioactive material with a half-life of 30.2 years that is used in radiotherapy as a sealed source of gamma rays intended for application to various malignancies that are treated by brachytherapy. Cesium has replaced radium for such applications. See also brachytherapy. cesium a chemical element, atomic number 55, atomic weight 132.905, symbol Cs. See Table 6. cesium-137 a product of atomic fission by explosion or breakdown of a reactor. It is feared as a pollutant because of its very long half-life. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| nbsp;of iodine-137 and 1,300 curies of cesium-137 were released. The amount of radioactive cesium-137 taken up by trees is small, and the amount taken up by grass fertilized with ash from those trees would be even smaller, says geochemist Mark Fuhrmann of the Carcinogens including Strontium-90, recently found in the groundwater at the Indian Point reactors, and Cesium-137 are radioactive for 600 years. |
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