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Caesium is the spelling recommended by the International Union of Pure and Applied ... may contain only 0.002% caesium. Consequently, caesium is found in few minerals.
In April 2011, elevated levels of caesium-137 were also being found in the environment after the Fukushima Daiichi nuclear disasters in Japan. In July 2011, meat from 11 cows shipped to Tokyo from Fukushima Prefecture was found to have 1,530 to 3,200 becquerels per kilogram of 137 Cs, considerably exceeding the Japanese legal limit of 500 ...
The capsule is 6 mm × 8 mm (0.24 in × 0.31 in) in size, [1] and is used as part of a nucleonic level sensor in the crushing circuit [2] in iron ore mining.The capsule contains 19 gigabecquerel [3] of caesium-137 as a ceramic source.
The radiation source in the Goiânia accident was a small capsule containing about 93 grams (3.3 oz) of highly radioactive caesium chloride (a caesium salt made with a radioisotope, caesium-137) encased in a shielding canister made of lead and steel. The source was positioned in a container of the wheel type, where the wheel turns inside the ...
Caesium-134 is found in spent nuclear fuel but is not produced by nuclear weapon explosions, as it is only formed by neutron capture on stable Cs-133, which is only produced by beta decay of Xe-133 with a half-life of 3 days. Cs-134 has a half-life of 2 years and may be a major source of gamma radiation in the first 20 years after discharge.
Caesium-135 is a mildly radioactive isotope of caesium with a half-life of 1.33 million years. It decays via emission of a low-energy beta particle into the stable isotope barium-135. Caesium-135 is one of the seven long-lived fission products and the only alkaline one.
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Caesium or cesium [note 1] is the chemical element with the symbol Cs and atomic number 55. ... It is found in nature as an alloy, mostly in platinum ores; ...