Re: [Ifeffit] values of f(k), δ(k) and λ(k)

2010-05-11 Thread Bruce Ravel
On Tuesday 11 May 2010 01:11:03 am Neetu parsai wrote: Hello, Can some one give me the values of theoretically calculated functions f(k),δ(k) and λ(k), that can be used in EXAFS equation to calculate structural parameters. If these values are given in FEFF, how can I get those. I require

Re: [Ifeffit] Debye model on artemis

2010-05-11 Thread Shelly Kelly
Hi Kleber: I think of the Debye model as a model for the stiffness of the bond between two atoms that is like a spring. The vibration depends on the length of the spring (distance between the atoms) and the stiffness of the spring as related through the Debye temperature. Above the Debye

Re: [Ifeffit] Debye model on artemis

2010-05-11 Thread Matt Newville
Hi Kleber, I'd like to use the third cumulant option in Artemis, but considering the Debye model. Artemis has a Debye function for the second cumulant (Debye-Waller factor) but not to the third. How could this be done in Artemis? The debye and eins functions in Artemis/Ifeffit calculates