Re: [Ifeffit] Question about FEFF6

2011-04-12 Thread goodh...@gmail.com
Dear Prof. Ravel, Thanks so much for your answer, which remove the cloud partially above me. I actually tried many models, from crystal to the opposite 6O only (different distance, second shell C,P ...). The example shown in the email are two extreme cases, which single P has contribution lik

[Ifeffit] XAS/XPS postdoc position at The University of Manchester

2011-04-12 Thread Sven Schroeder
Dear all I would be grateful if you could bring this XAS/XPS post to the attention of suitable candidates. The post has been funded for 30 months and is available from 1 June 2011. Follow this link: http://www.manchester.ac.uk/aboutus/jobs/vacancies/research/vacancy/?ref=126714 Research Assoc

Re: [Ifeffit] Question about FEFF6

2011-04-12 Thread Bruce Ravel
On Tuesday, April 12, 2011 03:24:22 am goodh...@gmail.com wrote: > 1, FEFF takes Z atoms at equal distance as same. It does not care some > have neighbor A, some have neighbor B. Should I worry about it? and when? In Feff6, two atoms that are at the same distance and have the same unique potentia

Re: [Ifeffit] Strategy to obtain cofigurationally averaged EXAFS from MD simulations

2011-04-12 Thread vikrai
Calculations of EXAFS averaged over an atomic configuration which may include up to a few tens of thousands atoms was implemented into the PMCProfile code for reverse Monte Carlo refinement of atomic configuration. Application of this approach to perovskite-like crystals was published in Krayz

Re: [Ifeffit] Strategy to obtain cofigurationally averaged EXAFS from MD simulations

2011-04-12 Thread Francisco Garcia
Dear Anatoly, Thank you very much for your reply. Unfortunately, your PRB references did not solve my problems. I am trying to reproduce the results of Cauet et al [J. Chem. Phys. 132, 194502 (2010)]. I basically have over 500 snapshots of a single Zn2+ ion (absorbing atom) in water (O atoms are t

Re: [Ifeffit] Strategy to obtain cofigurationally averaged EXAFS from MD simulations

2011-04-12 Thread Matt Newville
Francisco, This isn't really a job that Artemis was designed for. That is, you do not want to do a path-by-path analysis. I think what you want is to write a script that runs Feff on your several hundreds of configuration, and then extract and sum the chi.dat files from each of the runs. Feff

Re: [Ifeffit] Question about FEFF6

2011-04-12 Thread goodh...@gmail.com
Thanks a lot for the detailed answer. Best, Jack Song On 2011-04-12 09:03, Bruce Ravel wrote: On Tuesday, April 12, 2011 03:24:22 am goodh...@gmail.com wrote: 1, FEFF takes Z atoms at equal distance as same. It does not care some have neighbor A, some have neighbor B. Should I worry about it?