WebCobalt-60 decays to Ni-60 by beta decay, but the Ni-60 is initially in an excited state, and subsequently undergoes 2 emissions of gamma rays before reaching a stable state. (.12% of the time the beta decay leaves the Ni nucleus in the lower energy excited state, so only one gamma ray is emitted.) WebB.J. Parsons, in Sterilisation of Biomaterials and Medical Devices, 2012 3.3.1 Gamma radiation and X-ray sources. Cobalt-60 (60Co) and caesium-137 (137 Cs) are the most widely used sources of gamma radiation. 60 Co produces gamma rays with energies of 1.173 and 1.332 MeV and has a half-life of 5.27 years, whereas 137 Cs produces …
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WebBecause it decays by gamma radiation, external exposure to large sources of Co-60 can cause skin burns, acute radiation sickness, or death. Most Co-60 that is ingested is … WebMar 20, 2024 · cobalt-60, radioactive isotope of cobalt used in industry and medicine. Cobalt-60 is the longest-lived radioactive isotope of cobalt, with a half-life of 5.27 years. It is produced by irradiating the stable isotope … scooter finger
File:Cobalt-60 Decay Schemep.svg - Wikimedia Commons
WebSr-90 can be inhaled, but ingestion in food and water is the greatest health concern. Once in the body, Sr-90 acts like calcium and is readily incorporated into bones and teeth, where it can cause cancers of the bone, bone marrow, and soft tissues around the bone. Sr-90 decays to yttrium 90 (Y-90), which in turn decays by beta radiation so that ... WebRadioactive cobalt isotope 60 Co decays by emitting an electron (β − decay) with a half-life of 5.3 years into an excited state of 60 Ni, which then decays immediately to the ground … WebFor example, cobalt-60, an isotope that emits gamma rays used to treat cancer, has a half-life of 5.27 years (Figure 21.10). In a given cobalt-60 source, since half of the 27 60 Co 27 60 Co nuclei decay every 5.27 years, both the amount of material and the intensity of the radiation emitted is cut in half every 5.27 years. (Note that for a ... scooter fire gif