Кобальт — Вікіпедія
γ-ray spectrum of cobalt-60 Cobalt-60 ( 60 Co) is a synthetic radioactive isotope of cobalt with a half-life of 5.2713 years. [3] : 39 It is produced artificially in nuclear reactors. Deliberate industrial production depends on neutron activation of bulk samples of the monoisotopic and mononuclidic cobalt isotope 59 Co . [4]