Concept information
Preferred term
ionizing radiation
Definition(s)
- Ionizing radiation (or ionising radiation), including nuclear radiation, consists of subatomic particles or electromagnetic waves that have sufficient energy to ionize atoms or molecules by detaching electrons from them. Some particles can travel up to 99% of the speed of light, and the electromagnetic waves are on the high-energy portion of the electromagnetic spectrum. Gamma rays, X-rays, and the higher energy ultraviolet part of the electromagnetic spectrum are ionizing radiation, whereas the lower energy ultraviolet, visible light, nearly all types of laser light, infrared, microwaves, and radio waves are non-ionizing radiation. The boundary between ionizing and non-ionizing radiation in the ultraviolet area is not sharply defined, as different molecules and atoms ionize at different energies. The energy of ionizing radiation starts between 10 electronvolts (eV) and 33 eV. (Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/Ionizing_radiation)
Broader concept(s)
Narrower concept(s)
In other languages
-
French
URI
http://data.loterre.fr/ark:/67375/MDL-HZSCR3HW-F
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