[Ifeffit] (no subject)

Scott Calvin SCalvin at slc.edu
Wed Dec 26 19:18:51 CST 2007

Hi Luanga,

Artemis/Ifeffit allow both the third and fourth cumulants to be  
fitting parameters. Assigning a guess parameter to the third cumulant,  
particularly for near neighbor paths, can sometimes be quite useful. A  
fit that requires cumulants beyond the fourth is usually so disordered  
that a cumulant expansion isn't the best strategy anyway.

--Scott Calvin
Sarah Lawrence College

On Dec 26, 2007, at 6:12 PM, Luanga Nchari wrote:

> Merry Christmas to all. I am a research student with the following  
> questions:
> ·  Does Artemis have a cumulant expansion feature?
>   How can it be used to correct anharmonicity?
> I suspect this might answer why my fit in K-space is not quite in  
> phase eventhough the fit in R-space is good.
> Other suggestions would be welcome.
> Thanks,
> Luanga Nchari
> ·
> Support the World Aids Awareness campaign this month with Yahoo! for  
> Good_______________________________________________
> Ifeffit mailing list
> Ifeffit at millenia.cars.aps.anl.gov
> http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://millenia.cars.aps.anl.gov/pipermail/ifeffit/attachments/20071226/bb53e01b/attachment.html>

More information about the Ifeffit mailing list