cesium 137

American  

noun

Chemistry.

1. the radioactive cesium isotope with mass number 137 and a half-life of 33 years: used for gamma irradiation of certain foods and for radiation therapy.

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Example Sentences

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cesium 137

In Colorado, for instance, 27 buildings house scary-sounding elements such as cesium 137, cobalt 60, americium 241 and iridium 192.

From Scientific American ● Mar. 11, 2022

The breached reactor would then spew "16 percent of the core inventory"—"inventory" meaning cesium 137, along with 68 other radioactive isotopes in the hot nuclear fuel.

From Scientific American ● Mar. 9, 2012

The oceanic study estimates 27,000 terabecquerels of radioactive cesium 137 leaked into the sea from the Fukushima plant, north of Tokyo.

From BusinessWeek ● Oct. 31, 2011

It, too, is relatively basic, but it showed a patch of bright yellow right over her village of Shidamyo, an indicator of high levels of the radioactive isotopes cesium 134 and cesium 137.

From New York Times ● Aug. 1, 2011

In a reactor, many of the uranium 235 nuclei split apart, transforming into radioactive isotopes such as iodine 131 and cesium 137.

From "Meltdown" by Deirdre Langeland