Electron Probe X-Ray Microanalyzer (EMPA) Laboratory

Gallery

 


 

NEW FEATURE (starting Jan 2017)! 

For long distance users, you do not have to come to the lab to set up your probe points. Remote access is available now!

Probe users can now mail their samples to us and pick your points remotely at home! (Windows system only)

Contact the probe technician about more details!

 


1.  Example of SEI Imaging

 
   

 

2. Examples of EDS (Energy Dispersive Spectrometer) Qualitative and Semi-Quantitative analyses:

EDS Report

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3. Example of WDS (Wavelength Dispersive Spectrometer) Qualitative Scanning:

   
QLW    
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4. Example of WDS (Wavelength Dispersive Spectrometer) Quantitative Spot analyses:

    Elemental range (C to Bi) with Detection Limit down to 10s of ppm, spatial resolution down to um, precision better than 1 relative percent.

   

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(Positions recorded for demo only, do not correspond to the analyses on the right.) 

 Example of Analyses

 

 


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5. Mapping Capability A:    BSE (left) vs Elemental Map (right)

COMPO_WEB Ca_WEB

   


Mapping Capability B:    WDS Mapping (left) and EDS mapping (right)

 

 

Application Example: WDS free shape mapping on an Amphibole grain ~500 um

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6. Example of WDS Quantitative Mapping of the whole thin section (4.4 by 2.7 cm), ~ 2 hours

   

 Si_WholeSection

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7. Phase mapping potentials

a) According to Ternary diagrams:

b) According to X-Y chart

c) According to histograms:   

Ternary_Diagram_Exampl

XYPlot

Histogram

 

  image025

 

 

 

 

 

 

 

 

 

 

 

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Training input:          
# of pixels selected as plag1: 6394
# of pixels selected as pyx: 342
# of pixels selected as plag2: 384
# of pixels selected as FeTiOxide: 739
# of pixels selected as background: 25230
Creating training data took: 109ms    
             
Output Results            
% of pixels selected as plag1: 81.36
% of pixels selected as pyx: 4.356
% of pixels selected as plag2: 4.89
% of pixels selected as FeTiOxide: 9.40
 


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