[Ifeffit] why ss_2 is negative?

Carlo Segre segre at iit.edu
Fri Feb 23 16:52:21 CST 2007

Dear Hao:

Just looking at your fit results, I noticed that enot_2 is also much too 
large at 35 eV and the dr_2 value is also quite large.  Whay are you 
setting these parameters to such large values?  Did you extract them from 
something else?



On Fri, 23 Feb 2007, hw26 at njit.edu wrote:

> Dear all,
> I am doing model fitting using Artemis. My sample is uranium solution with an
> ionic liquid,  1-methoxyethyl-3-methyl imidazolium tetrafluoroborate
> (MOEMIMBF4). The Fitting seems ok except that the ss_2 is negative. I don't
> know how can I fix this problem. Can you get a chance to take a look? My
> fitting is simple, only three single scattering pathes which were produced by
> Six Pack. The fitting file is attached. I really appreciate it if you could
> take a look and give some advice!
> Best regards!
> Hao

Carlo U. Segre -- Professor of Physics
Associate Dean for Special Projects, Graduate College
Illinois Institute of Technology
Voice: 312.567.3498            Fax: 312.567.3494
segre at iit.edu    http://www.iit.edu/~segre    segre at debian.org

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