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  1. From the Data Collector window, click on the three-line icon (hamburger/stack of pancakes button) in the upper right hand part of the window  → WebGe

  2. A new tab will open up on your browser which has the WebGe interface:


  3. In the “Controls” box on the left of the screen, press “Count”. Look at the ICR values being reported. If they are too high (>80 k on average), decrease the beam size or move the detector farther back.
  4. Check for previously saved SCA files for the element you are measuring. Access saved SCA files by clicking the hamburger button  → File → Open SCA. You or your research group may already have SCA files in the User folder. If not, select Master and search the filenames for the most recent SCA for your element of interest.


  5. At the bottom of the page, enter the element of interest to view its alpha and beta fluorescence energies.


  6. In the “Control" box on the left of the screen, click "Count." This will collect an MCA trace for every element of the detector, so you can window without exposing your sample the entire time.
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  7. Pick one of the 100 elements (you will go through all of them eventually), click on the corresponding box in the "Detector Geometry" section. You should see a spectrum in the bottom black portion of the WebGe window.
  8. Zoom in on the fluorescence peaks that you are interested in.

     

  9. Introduce a window by checking the box next to SCA 1, in the “SCA Control” box. The window is defined by its energy center and width. Note: You can look at these windows in 3 different "Gate Modes" selected next to the SCA "Center" and "Width" text boxes. "Full" will display the entire spectrum and the window will be shown as a red vertical bar. “AntiCoinc” will show you how the window is cutting out the fluorescent signal. Select “Coinc” to see just the signal within the window. It is generally most useful to window in AntiCoinc mode.
  10. Adjust the window center and width on the SCA 1 channel. You want the window to cut out the region slightly to the left of the center of the Kalpha peak.
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  11. Continue adjusting windows for each element (Step 9).
  12. When finished, go to the triple bars () at the top right → File →  Save SCA →  Save the file name (usually something like: [Metal]_MonthYear.sca). Save to User and to Master.



  13. The Ge detector should be windowed for each element of interest in your samples. It may be ideal to do the windowing procedure before loading your sample.
  14. When finished windowing, you can open the sca file to ensure that it is active (Triple bars → File → Open SCA)
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