Hi, Bruce,
Does that mean each shell has a different S02 value?
Wei
On Mon, Aug 20, 2012 at 9:44 AM, Bruce Ravel
I am using the (D)Artemis for EXAFS fitting. However, the "N" is set to be a constant in the (D)Artemis. We can not set the variable for this
On Monday, August 20, 2012 09:02:28 PM Huaming Guo wrote: parameter.
How can I do that if I model non crystalline samples using (D)Artemis? Thanks a lot.
In Artemis, N is a pure number, but S02 can take a math expression.
In the EXAFS equation, N and S02 are multiplied together.
Thus, you might consider parameterizing the amplitude by setting N to 1 and putting all of the parameterization in the math expression for S02.
B
--
Bruce Ravel ------------------------------------ bravel@bnl.gov
National Institute of Standards and Technology Synchrotron Methods Group at NSLS --- Beamlines U7A, X24A, X23A2 Building 535A Upton NY, 11973
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-- Wei Li Postdoc researcher Environmental Soil Chemistry Group Delaware Environmental Institute University of Delaware, Newark,19713 Tel:631-949-0663 http://ag.udel.edu/soilchem/li.html http://ag.udel.edu/soilchem/