- Industry: Government
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United States Department of Health and Human Services, Radiation Emergency Medical Management
The spontaneous disintegration of the nucleus of an atom.
Industry:Medical devices
The time required for a quantity of a radioisotope to decay by half. For example, because the half-life of iodine-131 (i-131) is 8 days, a sample of i-131 that has 10 mci of activity on january 1, will have 5 mci of activity 8 days later, on january 9. See also biological half-life, decay constant, effective half-life. (illustrations)
Industry:Medical devices
Material that contains unstable (radioactive) atoms that give off radiation as they decay.
Industry:Medical devices
The process of spontaneous transformation of the nucleus, generally with the emission of alpha or beta particles often accompanied by gamma rays. This process is referred to as decay or disintegration of an atom.
Industry:Medical devices
Disposable, radioactive materials resulting from nuclear operations. Wastes are generally classified into two categories, high-level and low-level waste.
Industry:Medical devices
A test to determine the amounts of radioactive materials through the detection of ionising radiation. Radioassays will detect transuranic nuclides, uranium, fission and activation products, naturally occurring radioactive material, and medical isotopes.
Industry:Medical devices
1) medical: the use of radiant energy (such as x-rays and gamma rays) to image body systems; 2) industrial: the use of radioactive sources to photograph internal structures, such as turbine blades in jet engines. A sealed radiation source, usually iridium-192 (ir-192) or cobalt-60 (co-60), beams gamma rays at the object to be checked. Gamma rays passing through flaws in the metal or incomplete welds strike special photographic film (radiographic film) on the opposite side.
Industry:Medical devices
Isotopes of an element that have an unstable nucleus. Radioactive isotopes are commonly used in science, industry, and medicine. The nucleus eventually reaches a stable number of protons and neutrons through one or more radioactive decays. Approximately 3,700 natural and artificial radioisotopes have been identified.
Industry:Medical devices
Related to radioactive materials or radiation. The radiological sciences focus on the measurement and effects of radiation.
Industry:Medical devices
The luminescence produced by particles emitted during radioactive decay. (chemical/biological/radiological incident handbook, central intelligence agency)
Industry:Medical devices
