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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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| And in 1993, tritium, strontium 90, cesium 137 and plutonium 238 were found in soil samples taken from the camp along the Rocketdyne property line. Since 1951," Hertsgaard writes, "Lake Karachay had accumulated an awesome 120 million curies worth of radioactivity and absorbed nearly 100 times more strontium 90 and cesium 137 than was released at Chernobyl. The plants are helping to clean the pond; their roots dangle in the water to suck up the radionuclides cesium 137 and strontium 90. |
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