The difference between Auger Electron Spectroscopy and XPS.

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Homework Help Overview

The discussion revolves around the differences between Auger Electron Spectroscopy and X-ray Photoelectron Spectroscopy (XPS), specifically focusing on distinguishing features in the secondary electron spectrum and the concept of core-level loss peaks.

Discussion Character

  • Exploratory, Conceptual clarification, Problem interpretation

Approaches and Questions Raised

  • Participants explore how to differentiate between Auger peaks and core-level loss peaks in the context of secondary electron spectra. Questions arise regarding the definition and implications of core-level loss peaks, as well as the interpretation of secondary electron distributions.

Discussion Status

Some participants express understanding of the concepts discussed, while others seek clarification on specific terms and principles related to exo electron spectroscopy. There is an ongoing exploration of the underlying principles and roles of these phenomena in spectroscopy.

Contextual Notes

One participant notes the challenge of finding detailed resources on exo electron spectroscopy, indicating a potential gap in available literature on the topic.

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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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