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Caesium-137 (137 55 Cs ), cesium-137 (US), [ 7 ] or radiocaesium , is a radioactive isotope of caesium that is formed as one of the more common fission products by the nuclear fission of uranium-235 and other fissionable isotopes in nuclear reactors and nuclear weapons .
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 ...
The Kramatorsk radiological accident was a radiation accident that happened in Kramatorsk, Donetsk Oblast, in eastern Ukrainian SSR from 1980 to 1989. A small capsule containing highly radioactive caesium-137 was found inside the concrete wall of an apartment building, with a surface gamma radiation exposure dose rate of 1800 R/year. [1]
Cesium (Cs-137) is the primary isotope released from the Fukushima Daiichi facility. [160] Cs-137 has a long half-life, meaning it could potentially have long-term harmful effects, but as of now, its levels from 200 km outside of Fukushima show close to pre-accident levels, with little spread to North American coasts. [156]
OSLO (Reuters) -Norway said on Wednesday that elevated levels of radioactive caesium (Cs-137) it had detected near the Arctic border with Russia were likely due to a forest fire near Chornobyl in ...
Sometime between 10 and 16 January 2023, a radioactive capsule containing caesium-137 was lost from a truck in Western Australia.The capsule was being transported 1,400 kilometres (870 mi) from Rio Tinto's Gudai-Darri iron ore mine near Newman to a depot in the Perth suburb of Malaga.
A mining company dropped a tiny capsule of caesium-137 somewhere along an 870-mile stretch of Western Australia’s Great Northern Highway. The plan is to find it before someone gets hurt, Liam ...
The map showed that a belt of contamination, with radioactivity from 3 to 14.7 MBq caesium-137 per square meter, spread to the northwest of the nuclear plant. [215] For comparison, areas with activity levels with more than 0.55 MBq caesium-137 per square meter were abandoned after the 1986 Chernobyl accident. [215]