Matthew, Matt, and Anatoly,
Thanks for your replies and some good suggestions. You have convinced me
that the best thing for me to do here is to try multiple analysis methods
and see how well the results, and uncertainties, compare, as was done in
the previously referenced PRL.
Thanks again,
Something I've done for analyzing DWF on data taken at several
temperatures is what I called 'consensus amplitude' fitting. Here, I
fitted shells to
k^n*chi[i](k) = exp(-2 dsig2[i] k^2) A(k) sin(phi(k)+2 dr[i]k)
where i is the index to temperature, and the fit parameters are A(k),
phi(k),
Hi George,
I think this will not be a different answer from Matthew's or Anatoly's
answers, but just reiterate their points. The Purans et al 2008 PRL from
2008 appears to use both non-linear fitting with Feff and EDA (which should
give basically the same results as Artemis/Ifeffit/Larch, though
