EXAFS Fitting

 

On the lower left part of the EXAFS123 Main Panel, there are boxes that allow the user to specify the range for EXAFS and pre-edge fitting. Look at the Baseline curve (check the box next to "XAS+baseline" on the top right part of the EXAFS123 Main Panel). The EXAFS region starts at k=2.2 and goes up to k=16 (the "k" scale is shown in green at the top of the Baseline curve).

 

The pre-edge region starts at DE equals approximately -160eV to the point where the curve starts to rise: DE= -7. Insert the values in the appropriate boxes.

 

Data weighting

 

To multiply the EXAFS region by k^2, insert "2" in the box. The XAS before edge is multiplied by 100. After entering all the values mentioned up here, your EXAFS123 Main Panel should look like this: