cobalt-60


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Related to cobalt-60: cobalt 57

cobalt-60 (60Co)

a radioactive isotope of the element cobalt with a mass of 60 and a half-life of 5.2 years. 60Co emits high-energy gamma rays and is the most frequently used radioisotope in radiotherapy. It must be stored in a position well shielded by lead or uranium.

cobalt-60

A radioactive isotope of cobalt, having a half-life of 5.27 years. It formerly served as a source of beta and gamma rays in radiation units used to treat malignancies. Modern radiation units have replaced cobalt-60 by higher-energy sources, e.g., linear accelerators.

cobalt

a chemical element, atomic number 27, atomic weight 58.933, symbol Co. A component of vitamin B12. See Table 6.

cobalt-57
a radioisotope of cobalt having a half-life of 270 days; used as a label for cyanocobalamin. Symbol 57Co.
cobalt-60
a radioisotope of cobalt having a half-life of 5.27 years and a principal gamma ray energy of 1.33 MeV; used as a radiation therapy source. Symbol 60Co.
cobalt nutritional deficiency
causes anorexia and poor weight gain. Identification of the disease is based on chemical analysis of pasture and soil and biochemical analysis of animal tissues and fluids. Called also enzootic marasmus, Grand Traverse disease and other regional names.
cobalt poisoning
accidental overdosing with cobalt causes listlessness, weight loss and incoordination.
References in periodicals archive ?
Cobalt-60 decays to Nickel-60 (60Ni28) by the emission of beta particle.
The cobalt-60 that was missing for nearly two days was left in a rural area about a kilometer (about a half-mile) from Hueypoxtla, a farm town of about 4,000 people.
The truck was transporting the cobalt-60 from a hospital in the northern city of Tijuana to a radioactive waste storage center, and was stolen in Tepojaco, central Mexico's Hidalgo State, Mexican authorities said in a report sent to the Vienna-based International Atomic Energy Agency (IAEA), which announced the theft earlier Wednesday.
Luan, senior scientist and manager of radiation protection, Nuclear Science and Technology Association (NuSTA); consultant to NBC Society; former manager, Radioactive Waste Management Plant; and manager, Cobalt-60 Irradiation Plant of INER, AEC;
Having some Cobalt-60 sources for the research irradiator in the agriculture center not secure and not used, posed some threat, actually a lot of threat on the public, on Lebanon," said Muzna Assi, Section Head of Radioactive Waste Management and Safe Transport of Radioactive Sources at LAEC.
Key words: cobalt-60, radiation, tolerance, ingluvies, skin, avian, psittacine, birds, ring-necked parakeets, Psittacula krameri
Samples were irradiated at absorbed dosages of 0, 5, and 10 kGy in a cobalt-60 source irradiator at about 18 C.
Cobalt-60 is used all over the world for medical and engineering purposes.
Nuclear power plants use cobalt-59 as an adjustor or control rod, which is converted to radioactive cobalt-60 during the nuclear reaction process.
Cesium-137, strontium-90, cobalt-60, and other potential bomb ingredients are reactive metals.
But the IAEA says there are more than 10,000 sources designed for radiotherapy each containing 1,000 pellets of strongly radioactive cobalt-60.
Radioprotective effects of Vitexina for breast cancer patients undergoing radiotherapy with Cobalt-60," Integrative Cancer Therapies, 2002; 1(1):3843.