Back تأثير أوجيه Arabic Эфект Ажэ Byelorussian Ефект на Оже Bulgarian অগার ক্রিয়া Bengali/Bangla Efecte Auger Catalan Augerův jev Czech Auger-Meitner-Effekt German Efiko de Auger Esperanto Efecto Auger Spanish Auger efektua Basque

Auger effect

Two views of the Auger process. (a) illustrates sequentially the steps involved in Auger deexcitation. An incident electron (or photon) creates a core hole in the 1s level. An electron from the 2s level fills in the 1s hole and the transition energy is imparted to a 2p electron which is emitted. The final atomic state thus has two holes, one in the 2s orbital and the other in the 2p orbital. (b) illustrates the same process using X-ray notation, KL1L2,3.

The Auger effect (/oʊˈʒeɪ/; French pronunciation: [ˈ/o.ʒe/]) or Auger−Meitner effect is a physical phenomenon in which the filling of an inner-shell vacancy of an atom is accompanied by the emission of an electron from the same atom.[1] When a core electron is removed, leaving a vacancy, an electron from a higher energy level may fall into the vacancy, resulting in a release of energy. For light atoms (Z<12), this energy is most often transferred to a valence electron which is subsequently ejected from the atom.[2] This second ejected electron is called an Auger electron.[3] For heavier atomic nuclei, the release of the energy in the form of an emitted photon becomes gradually more probable.

  1. ^ IUPAC, Compendium of Chemical Terminology, 2nd ed. (the "Gold Book") (1997). Online corrected version: (2006–) "Auger effect". doi:10.1351/goldbook.A00520
  2. ^ Berkowitz. Photoabsorption, Photoionization, and Photoelectron Spectroscopy. Academic Press. p. 156. doi:10.1016/B978-0-12-091650-4.50011-6. ISBN 978-0-12-091650-4.
  3. ^ IUPAC, Compendium of Chemical Terminology, 2nd ed. (the "Gold Book") (1997). Online corrected version: (2006–) "Auger electron". doi:10.1351/goldbook.A00521

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