[Ifeffit] Third cumulant in DWF

Bruce Ravel bravel at bnl.gov
Mon Apr 4 16:33:25 CDT 2011

On Monday, April 04, 2011 05:25:39 pm Ping, Yuan wrote:
> Does the math expression in IFEFFIT include the term -4k*sigma2*(1/labmda
> +1/R) in the phase? If yes, the 1st cumulant is sigma1= R+dR. If no,
> sigma1= R+dR+2*sigma2*(1/labmda +1/R). It this correct?

When Ifeffit evaluates the exafs equation, it includes lamdba from the
Feff calculation.



 Bruce Ravel  ------------------------------------ bravel at bnl.gov

 National Institute of Standards and Technology
 Synchrotron Methods Group at NSLS --- Beamlines U7A, X24A, X23A2
 Building 535A
 Upton NY, 11973

 My homepage:    http://xafs.org/BruceRavel
 EXAFS software: http://cars9.uchicago.edu/~ravel/software/exafs/

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