Noun
caesium-137 (uncountable)
A radioactive isotope of caesium, 55Cr, having 55 protons and 82 neutrons and which is formed mainly as a fission product by nuclear fission.
An incident where water-soluble caesium-137 leaked into the source storage pool requiring NRC intervention citation has led to near elimination of this radioisotope outside of military applications. Source: Internet
As a daughter product of fission bomb testing from the 1950s through the mid-1980s, caesium-137 was released into the atmosphere, where it was absorbed readily into solution. Source: Internet
The radioactive isotope caesium-137 has a half-life of about 30 years and is used in medical applications, industrial gauges, and hydrology. Source: Internet
The caesium-137 chloride radioactive source is the blue square, and gamma rays are represented by the beam emerging from the aperture. Source: Internet
This was the radiation source involved in the Goiânia accident, containing about 93 grams of caesium-137 chloride. Source: Internet