cesium-137

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Related to cesium 137: Chernobyl, cobalt 60, strontium 90, iodine 131

cesium-137

[′sē·zē·əm ‚wən‚thərd·ē′sev·ən]
(nuclear physics)
An isotope of cesium with atomic mass number of 137; emits negative beta particles and has a half-life of 30 years; offers promise as an encapsulated radiation source for therapeutic and other purposes. Also known as radiocesium.
References in periodicals archive ?
steelworks in Wakayama, western Japan, for other radioactive substances because neutrons, which are not emitted by cesium 137, have been detected.
In comparison, no cesium 134 was found in tuna caught in 2008, while a tiny amount of cesium 137 that would naturally exist in the environment was found in them.
The most significant release of radiation at Chernobyl involved two by-products of uranium fission - Iodine 131 and Cesium 137.
In 1993, lab officials found elevated levels of tritium, along with strontium 90, cesium 137 and plutonium 238, in soil samples from Brandies Bardin taken near the lab property line.
Among the radiation sources used in the testing were plutonium, enriched uranium, cesium 137, barium 133, phosphorus 32 and combinations of these sources.