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Auger effect

[oh-zhey] /oʊˈʒeɪ/
noun, Physics.
1.
a nonradiative process in which an atom in an excited state undergoes a transition to a lower state by the emission of a bound electron (Auger electron) rather than by the emission of an x-ray.
Also called autoionization.
Origin
1930-1935
1930-35; named after Pierre V. Auger (born 1899), French physicist
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for auger electron

Auger effect

/ˈaʊɡə/
noun
1.
the spontaneous emission of an electron instead of a photon by an excited ion as a result of a vacancy being filled in an inner electron shell
Word Origin
C20: named after Pierre Auger (1899–1993), French physicist
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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