The difference between Auger Electron Spectroscopy and XPS.

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SUMMARY

The discussion focuses on the distinctions between Auger Electron Spectroscopy (AES) and X-ray Photoelectron Spectroscopy (XPS), particularly in identifying core-level loss peaks within secondary electron spectra. Key points include the identification of true secondary electrons, Auger peaks, and elastic scattering peaks in the energy distribution. Participants seek clarity on exo electron spectroscopy, which involves the simultaneous heating and illumination of a sample, leading to the emission of exo electrons. Understanding these concepts is crucial for accurate interpretation of spectroscopic data.

PREREQUISITES
  • Understanding of Auger Electron Spectroscopy (AES)
  • Familiarity with X-ray Photoelectron Spectroscopy (XPS)
  • Knowledge of secondary electron emission processes
  • Basic principles of electron scattering in materials science
NEXT STEPS
  • Research the differences between Auger Electron Spectroscopy and X-ray Photoelectron Spectroscopy
  • Study the mechanisms of secondary electron emission in detail
  • Explore the principles of exo electron spectroscopy and its applications
  • Investigate artifacts in Auger spectra as outlined in the "Encyclopedia of Materials Characterization"
USEFUL FOR

Materials scientists, spectroscopists, and researchers in surface analysis who aim to deepen their understanding of electron spectroscopy techniques and their applications in material characterization.

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How can we distinguish between Auger and core-level loss peaks (such as in XPS) in the secondary electron spectrum?
 
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I looked into the "Encyclopedia of Materials Characterization" under Auger spectroscopy. It lists artifacts in the spectrum, but I am unsure when you say "core-level loss peaks" what is meant and would need to understand it.

The secondary electron (energy) distribution typically shows a broad peak at lower energies, known as "true secondaries" - e.g. a result of scattering and interactions while escaping the sample; then are the small Auger peaks, and to the right (high energies) is the elastic scattering peak of the incident electron beam.

Does this make sense?
 
Yes it does, thank you!
 
Hi everyone,

Anyone with a clear view on exo electron spectroscopy?
I couldn’t find a well detailed article or a book in this topic anyone who could help me out with this?

As far I understood its a phenomena which happens when the sample is simultaneously heated and illuminated, emission of exo electron happens!
But what is the principle and how exactky it works and what is the role of this phenomenon on spectroscopy ?
Please help me out with this.

Thank you.
 

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