[Ifeffit] Fwd: 答复: About EXAFS process software

[Bruce Ravel]

Hi Wang,

I am forwarding my answer to the Ifeffit mailing list.  One of the
most important reasons for having a mailing list is to provide a
resource for people like yourself who are new to EXAFS or to EXAFS
analysis using Ifeffit and the related software.  The URL for the
mailing list is in my earlier email to you, shown below.  I *strongly*
encourage you to join and to post your questions there.  The reason
is that there are several people who answer questions on the mailing
list.  This gives you the benefit of the advice of several experts.
What's more, if I am busy (as I will be when beam time starts
tomorrow), there are other people available to answer your questions.

>    I have some simple question about IFEFFIT. Recently, from
> "http://cars9.uchicago.edu/~ifeffit/src/ifeffit-1.2.10.exe" I have download
> the lasted version. However, it can not open the attached .dat file which
> can be opened correctly by version 1.2.9. 

I had no problem opening those data in Athena.  They are very glitchy
and a bit noisy but there is nothing wrong with those data.

>     There are many such simple difficulties for me to learn the software. I
> am like a snail climbing on the way. Is there some study video on IFEFFIT to
> be downloaded? Or else, would you kind to help me process 7 data about GeSi
> alloy (formed in Ge/Siquantum dots)? I have the Ge-Si FEFF file.

I synpathize with the difficulty of getting started with this
software.  It's non-trivial to use and basically everything is written
in English.  

I am not in a position to offer to process data for you.  Our software
has many hundreds of users -- I simply cannot provide that kind of
support without burying myself.

I will however, point you in the direction of educational materials
that are available.

  1. The Athena document is a good place to start: 
        http://cars9.uchicago.edu/~ravel/software/doc/Athena/html/
     You also have a copy of the document on your computer if you
     installed the 1.2.10 windows installer.

  2. More Ifeffit-related documentation is found here:
        http://cars9.uchicago.edu/iffwiki/Documentation

  3. The stuff on this page:
        http://xafs.org/Tutorials
     is of very high quality.

  4. Many of the workshops listed here have downloadable materials
     that are useful:
        http://xafs.org/Workshops

  5. There is a very handy Artemis tutorial by Scott Calvin here:
        http://cars9.uchicago.edu/iffwiki/HoraeSoftware#contrib
     It walks you through an analysis of zinc oxide -- a fairly simple
     system. 

  6. I have, in fact, started thinking about using video to teach the
     use of the software.  My first stab at doing this can be found
     here: 
        http://cars9.uchicago.edu/iffwiki/HoraeSoftware#screencasts
     It's not perfect, but you might find it useful.


Hope that helps.  When it doesn't, feel free to ask questions here on
the mailing list.

Regards,
Bruce



>     thank you for your consideration!
> Yours sincerely

> Dr Wang Kefan

> -----????-----
> ???: Bruce Ravel [mailto:bravel at anl.gov] 
> ????: 2007?7?26? 20:18
> ???: Wang Ke-Fan
> ??: Re: About EXAFS process software

> On Wednesday 25 July 2007, you wrote:
> > Dear Bruce Ravel:
> >
> >    Hi!
> >
> >    I am a newcomer for EXAFS processing software. Now I am interesting
> your
> > IFEFFIT. But I found that your software may be based on the FEFF, which is
> > charged software. Now I want to know, whether I can deal with my EXAFS
> data
> > or not completely free of charge. If not, may you give me some advices in
> > view of a beginner? I have a little experience on USTCXAFS3.0 (a common
> > software by NSRL XAFS group, China).

> Hi Wang,

> You are mistaken about the licensing conditions.  Ifeffit ships with
> version Feff6L, which carries a license that is rather like the BSD
> license.  See

>   http://cars9.uchicago.edu/iffwiki/License

> When you install Ifeffit, Feff6L will also be installed on you
> computer and, as the licence clearly states, Feff6L is freely
> redistributable and free of cost.

> That version cannot compute XANES in the manner of Feff8, but is just
> fine for EXAFS analysis.

> I highly recommend that you join the Ifeffit mailing list:

>   http://cars9.uchicago.edu/mailman/listinfo/ifeffit/ 

> It is a great resource for information about Feff and Ifeffit and a
> friendly place to ask questions about XAS and about the software.

> It is a pleasure to hear from you.  Ifeffit has lots of users, but
> very few in any of the east asian countries.  I am very pleased to
> hear that our community is growing in China. ;-)

> Regards,
> Bruce


> -- 
>  Bruce Ravel  ---------------------------------------------- bravel at anl.gov

>  Molecular Environmental Science Group, Building 203, Room E-165
>  MRCAT, Sector 10, Advance Photon Source, Building 433, Room B007

>  Argonne National Laboratory         phone and voice mail: (1) 630 252 5033
>  Argonne IL 60439, USA                                fax: (1) 630 252 9793

>  My homepage:    http://cars9.uchicago.edu/~ravel 
>  EXAFS software: http://cars9.uchicago.edu/~ravel/software/




-- 
 Bruce Ravel  ---------------------------------------------- bravel at anl.gov

 Molecular Environmental Science Group, Building 203, Room E-165
 MRCAT, Sector 10, Advanced Photon Source, Building 433, Room B007

 Argonne National Laboratory         phone and voice mail: (1) 630 252 5033
 Argonne IL 60439, USA                                fax: (1) 630 252 9793

 My homepage:    http://cars9.uchicago.edu/~ravel 
 EXAFS software: http://cars9.uchicago.edu/~ravel/software/exafs/


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