Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

n addition to photoelectrons, Auger electrons can result during XPS measurements. a) Based on tabulated binding energies estimate the kinetic energy of Cu L3M2M2 Auger

image text in transcribed

n addition to photoelectrons, Auger electrons can result during XPS measurements. a) Based on tabulated binding energies estimate the kinetic energy of Cu L3M2M2 Auger electrons emitted via the three processes. b) In reality, it is not completely accurate to use the tabulated binding energies (which are for neutral atoms). Why not? Which energy (or energies) are incorrect? Does the calculation in (d) under- or over-estimate the Auger electron kinetic energy? c) An Auger electron of a certain type (e.g. KL1L2 in Au ) will exhibit the same kinetic energy regardless of how it was induced (such as by a lab XPS X-rays @1.5 keV, a hard X-ray beamline @10 keV, or a high-energy electron beam). Why is this true? And why are Auger peaks usually plotted on a Kinetic Energy scale, rather than a Binding Energy scale used for overall XPS spectra? d) Which element(s) will not exhibit the Auger electron emission phenomenon, and why? e) Consider the NaKLL Auger spectrum of NaCl shown below. After Auger emission, three possible final Na electronic configurations are: 2s02p6,2s12p5,&2s22p4. Draw arrows drawn on orbital energy schematics to show the transitions resulting in each different Auger electron type. Assign each to the peaks labeled A,B,C on the diagram. Notate each using Auger notation (KxLyLz)

Step by Step Solution

There are 3 Steps involved in it

Step: 1

blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

blur-text-image

Step: 3

blur-text-image

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Fundamentals Of Thermal-Fluid Sciences

Authors: Yunus Cengel, John Cimbala, Afshin Ghajar

6th Edition

126071697X, 978-1260716979

More Books

Students also viewed these Chemical Engineering questions