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Concept information

Physical Phenomena > Radioactivity

Preferred term

Radioactivity  

Type

  • Topical Descriptor

Broader concept

Related concepts

Entry terms

  • Decay, Nuclear
  • Disintegration, Radioactive
  • Disintegrations, Radioactive
  • Nuclear Decay
  • Radioactive Disintegration
  • Radioactive Disintegrations

Note

  • IM general only for principle of emission of radiations; NIM as coordinate for degree of radioactivity of specific radioelements or radioisotopes (IM); do not use as routine coordinate for amount of radiation or degree of radioactivity of radioisotope tracers; entry term NUCLEAR DECAY: coordinate NIM with specific radioactive substance (IM) & do not add RADIOMETRY

Scope note

  • The spontaneous transformation of a nuclide into one or more different nuclides, accompanied by either the emission of particles from the nucleus, nuclear capture or ejection of orbital electrons, or fission. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)

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URI

http://www.yso.fi/onto/mesh/D011851

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