quimica atomic ahsorption spectroscopy; – atomica / Fis rad atomic spectroscopy; – de electrones Auger / iEEs) Fis, quimica Auger electron spectroscopy isES);. Caracterización eléctrica de películas delgadas de SIO2 mediante esprectoscopia de electrones auger. Article (PDF Available) with 25 Reads. Export this. Auger effect definition, 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 .
|Published (Last):||6 July 2012|
|PDF File Size:||13.55 Mb|
|ePub File Size:||1.48 Mb|
|Price:||Free* [*Free Regsitration Required]|
The Auger 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. Although most often this energy is released in the form of an emitted photonthe energy can also be transferred to another electron, which is ejected from the atom; this second ejected electron is called an Auger electron.
Espectroscopia Electronica Auger by Antonio Valdez Ceballos on Prezi
Upon ejection, the kinetic energy of the Auger electron corresponds to the difference between the energy of the initial electronic transition into the vacancy and the ionization energy for the electron shell from which the Auger electron was ejected. These energy levels depend on the type of atom and the chemical environment in which the atom was located.
Auger electron spectroscopy involves the emission of Auger electrons by bombarding a sample with either X-rays or energetic electrons and measures the intensity of Auger electrons that result as a function of the Auger electron energy. The resulting spectra can be used to determine the identity of the emitting atoms and some electrnes about their environment.
Auger recombination is a similar Auger effect which occurs in semiconductors. An electron and electron hole electron-hole pair can recombine giving up their energy to an electron in the elecfrones band, increasing its energy. The reverse effect is known as impact ionization.
Espectroscòpia electrònica Auger – Viquipèdia, l’enciclopèdia lliure
The Auger effect can impact biological molecules such as DNA. Following the K-shell ionization of the component atoms of DNA, auger electrons are ejected leading to damage of its electrone backbone.
The Auger emission process was observed and published in by Lise Meitner 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  upon analysis of a Wilson cloud chamber experiment and it eledtrones the central part of his PhD work.
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. From Wikipedia, the free encyclopedia.
Comparative contributions to the Auger effect”. International Journal of Materials Research.