Radioactivity

  • (noun): The spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay.
    Synonyms: radiation

Some articles on radioactivity:

Long-lived Fission Product - LLFP Radioactivity Compared
... About 1000 years after fuel use, radioactivity from the medium-lived fission products Cs-137 and Sr-90 drops below the level of radioactivity from Tc-99 or LLFPs in general ... if not removed, will be emitting more radioactivity than either at this point.) By about 1 million years, Tc-99 radioactivity will have declined below that of Zr-93 ...
Airborne Particulate Radioactivity Monitoring
... have been used for years in nuclear facilities to assess airborne particulate radioactivity (APR) ... people in their homes for the presence of manmade radioactivity ...
Long-lived Fission Product - Evolution of Radioactivity in Nuclear Waste - Short-term
... The high short-term radioactivity of spent nuclear fuel is primarily from fission products with short half-life ... The radioactivity in the fission product mixture is mostly short-lived isotopes such as I-131 and 140Ba, after about four months 141Ce, 95Zr/95Nb and 89Sr take the largest share ... Note that in the case of a release of radioactivity from a power reactor or used fuel, only some elements are released ...
Strontium-90 - Radioactivity
... Natural strontium is nonradioactive and nontoxic, but 90Sr is a radioactivity hazard. 90Sr undergoes β− decay with a half-life of 28.79 years and a decay energy of 0.546 MeV distributed to an electron, an anti-neutrino, and the yttrium isotope 90Y, which in turn undergoes β− decay with half-life of 64 hours and decay energy 2.28 MeV distributed to an electron, an anti-neutrino, and 90Zr (zirconium), which is stable ...
Survival Under Atomic Attack - Center Insert - Kill The Myths (15)
... will blow the earth apart or kill us all by radioactivity ... Radioactivity Is Not The Bomb's Greatest Threat In most atom raids, blast and heat are by far the greatest dangers that people must face ... Radioactivity alone would account for only a small percentage of all human deaths and injuries, except in underground or underwater explosions ...