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Electron Microprobe and Electron Microscopy Fundamentals

In the simplest terms, what is an electron microprobe?
 
What are secondary electrons, how are they formed, and what can they tell us about the sample?
 
What are backscattered electrons, how are they formed, and what can they tell us about our sample?
 
What are characteristic X-rays?
 
What are continuum X-rays (also called Bremsstrahlung or "background" X-rays)?
 
How does a wavelength dispersive spectrometer work?
 
What is the difference between an electron microprobe and a scanning electron microscope?


Analytical Procedures

What are the advantages of electron microprobe analyses when compared to traditional
"wet chemical" analyses?
 
Are there samples that electron microprobes can NOT analyze?
 
What preparation procedures must be followed for samples that are going be analyzed using an electron microprobe?
What size samples can be analyzed?
 

Geology
What is petrography?