Auger electron spectrometer 2

Microscopic Characterization
Category General
Difficulty Level Normal
Audience Level General
Description Microscopic characterization methods refer to scientific techniques Which allow determination of both composition and structure of a material. Optical microscopy, scanning probe microscopy and electron microscopy are known as microscopic techniques. This course illustrates how microscopic characterization techniques are used.
Overview
Microscopic methods play an essential role in nanomaterials characterization. Microscopic and X-ray based characterization of nanomaterials techniques are used for the determination of surface morphology and dispersion characteristics of nanomaterials. This course deals with details of these aspects, and will provide a fundamental understanding of morphological tools, such as instrumentation, sample preparation and different kinds of analyses, etc.


Booklet
Description
 The interaction of an electron beam with a solid sample results in the emission of secondary and back-scattered electrons. A direct Auger spectrum is represented as a plot of the number of electrons detected as a function of electron kinetic energy. The derivative spectrum helps to accentuate the Auger signal by suppressing the background due to secondary and back-scattered electrons. Chemical shifts, or, equivalently, energy shifts, occur when there is a charge transfer from one atom to another.
Mental Challenge
 What are the features of secondary and backscattered electron distribution?
Quizzes and Activities
 Activity: Find the direct and differentiated spectrum of copper.
Further Reading Sources
 1.https://public.wsu.edu/~scudiero/documents/571-Auger-Lecture.pdf 

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Section 8