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 .

Author: Arashibar Zulujora
Country: Singapore
Language: English (Spanish)
Genre: Relationship
Published (Last): 23 January 2014
Pages: 368
PDF File Size: 5.54 Mb
ePub File Size: 9.42 Mb
ISBN: 310-9-34577-863-9
Downloads: 87890
Price: Free* [*Free Regsitration Required]
Uploader: Mazujora

International Journal of Materials Research. Following the K-shell ionization of the component atoms of DNA, auger electrons are ejected leading to damage of its sugar-phosphate backbone.

ayger 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 elecgrones an Auger electron. 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.

  MAHR PS1 PDF

The reverse effect is known as impact ionization.

This page was last edited on 15 Novemberat Views Read Edit View history. 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 conduction band, increasing its energy.

Auger effect – Wikipedia

The resulting spectra can be used to determine the identity of the emitting atoms and some information about their environment. The Auger emission process was observed and published in by Lise Meitner[5] an Austrian-Swedish physicist, as a side effect in her competitive search for the nuclear beta electrons with the British physicist Electronew Drummond Ellis.

Comparative contributions to the Auger effect”.

The Auger effect can impact biological molecules such as DNA. From Wikipedia, the free encyclopedia. The French physicist Pierre Victor Auger independently discovered it in [6] upon analysis of a Wilson cloud chamber experiment and it became the central part of his PhD work.

Espectroscopia Electronica Auger by Antonio Valdez Ceballos on Prezi

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. Atomic physics Foundational quantum physics Scientific techniques.

  LOEWE VIEWVISION DR PDF

These energy levels depend on the type of atom and the chemical environment in which the atom auher located.

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.

In other projects Wikimedia Commons. By using this site, you agree to the Terms of Use and Privacy Policy. Retrieved from ” https: Upon ejection, augr 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 augre the Auger electron was ejected.