Search on: RADIOACTIVITY 
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Descriptor English:   Radioactivity 
Descriptor Spanish:   Radiactividad 
Descriptor Portuguese:   Radioatividade 
Synonyms English:   Radioactive Disintegration
Decay, Nuclear
Disintegration, Radioactive
Disintegrations, Radioactive
Radioactive Disintegrations
Radioactivities
Nuclear Decay  
Tree Number:   G01.828
SP4.011.087.698.384.075.181
SP8.473.654.412.062.122
Definition English:   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) 
Indexing Annotation English:   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
Record Number:   12290 
Unique Identifier:   D011851 

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