Editing Auger effect (section)

==Discovery==
The Auger emission process was observed and published in 1922 by [[Lise Meitner]],<ref>{{cite journal|doi=10.1007/BF01326962|author=L. Meitner|title=Über die Entstehung der β-Strahl-Spektren radioaktiver Substanzen|journal=Z. Phys. |volume=9|issue=1|year=1922|pages=131–144|bibcode= 1922ZPhy....9..131M|s2cid=121637546}}</ref> an Austrian-Swedish physicist, as a side effect in her competitive search for the nuclear beta electrons with the British physicist [[Charles Drummond Ellis]].

The French physicist [[Pierre Victor Auger]] independently discovered it in 1923<ref>P. Auger: [http://gallica.bnf.fr/ark:/12148/bpt6k3130n.image.f187.langFR Sur les rayons β secondaires produits dans un gaz par des rayons X], C.R.A.S. 177 (1923) 169–171.</ref> upon analysis of a Wilson [[cloud chamber]] experiment and it became the central part of his PhD work.<ref>{{cite journal|doi=10.3139/146.110163|title=Pierre Auger – Lise Meitner: Comparative contributions to the Auger effect|year=2009|last1=Duparc|first1=Olivier Hardouin|journal=International Journal of Materials Research |volume=100|issue=9|pages=1162–1166|bibcode=2009IJMR..100.1162H |s2cid=229164774 }}</ref> High-energy X-rays were applied to ionize gas particles and observe [[photoelectric]] electrons. The observation of electron tracks that were independent of the frequency of the incident photon suggested a mechanism for electron ionization that was caused from an [[internal conversion]] of energy from a radiationless transition. Further investigation, and theoretical work using elementary quantum mechanics and transition rate/transition probability calculations, showed that the effect was a radiationless effect more than an internal conversion effect.<ref>{{Cite book |last=Burhop |first=E. H. S |url=https://archive.org/details/augereffectother0000ehsb/mode/2up |title=The Auger effect and other radiationless transitions (Cambridge monographs on physics) |date=1952-01-01 |publisher=University Press}}</ref><ref>{{Cite book |last=Chattarji |first=Dipankar |url=https://archive.org/details/theoryofaugertra0000chat |title=The theory of auger transitions |date=1976 |publisher=London ; New York : Academic Press |isbn=978-0-12-169850-8}}</ref>