radioactive decay

(redirected from Radiation, nuclear)
Also found in: Dictionary, Thesaurus, Encyclopedia.
Related to Radiation, nuclear: Nuclear Radiation Detectors

radioactive decay

the disintegration of the nucleus of an unstable nuclide by the spontaneous emission of charged particles, photons, or both.

radioactive decay

The continual loss of energy by radioactive substances. Disintegration of the nucleus by the emission of alpha, beta, or gamma rays eventually results in the complete loss of radioactivity. The time required for some materials to become stable may be minutes and, for others, thousands of years.
See: half-life
See also: decay


characterized by radioactivity.

radioactive decay
spontaneous decomposition of the nuclei of the atoms of radioactive substances. Measured as the proportion of the atoms in a radionuclide that decompose per unit of time, usually stated as the half-life of that particular isotope.
radioactive fallout
dissemination of radioactive substances through the atmosphere and deposition on the environment generally; causes radiation injury.
radioactive isotope
radionuclide. A radioactive nuclide, e.g. radioactive iodine or strontium.
radioactive tracer
see radioactive tracer.
References in periodicals archive ?
This partnership with Implant Sciences expands RAE Systems' open wireless network strategy for meeting the Chemical, Biological, Radiation, Nuclear and Explosive (CBRNE) detection needs of first responders for public venue protection," said Robert Chen, chief executive officer for RAE Systems.
com is an Internet-based supplier of radiation emergency products that protect against dirty bomb radiation, nuclear reactor accidents and nuclear weapon fallout, and are used for radiation therapy/decontamination in hospitals.
Singular ID is part of Advance Nanotech's Homeland Security Division which includes nanotechnologies providing solutions across two application areas: CBRNE Detection (Chemical, Biological, Radiation, Nuclear, and Explosive), and Wireless Monitoring for cognitive awareness, triage and first response therapy.
IAT) has completed a five-year volume sales agreement for the sales and deployment of the Integrated Chemical, Biological, Radiation, Nuclear and Explosives (I-CBRNE) sensor system.

Full browser ?