[Ifeffit] Mathematical expressions for the path parameters in Fitting

[Shelly Kelly]

Hi Brandon:

Here you go.

Good luck,
Shelly

On Fri, Sep 17, 2010 at 11:54 AM, Brandon Reese <bjreese at gmail.com> wrote:
> Hi Shelly,
>
> I am also looking into different ways to constrain my EXAFS fits.  If you
> wouldn't mind, I would also be very interested in a copy of your book
> chapter.
>
> Thanks,
> Brandon
>
> On Fri, Sep 17, 2010 at 9:40 AM, Shelly Kelly <dr.sdkelly at gmail.com> wrote:
>>
>> Hi Sumit:
>>
>> There are a lot of different ways to constrain the EXAFS parameters in
>> a fitting model. Mostly they are determined by physically meaningful
>> relationships or through trial and error of "what works". I just sent
>> you my book chapter and you will find detailed discussion on many of
>> the common constraints in there. Another good place to look is in the
>> literature to find out what people have done for systems similar to
>> yours.
>>
>> HTH,
>> Shelly
>>
>> On Fri, Sep 17, 2010 at 1:01 AM,  <sumitk at barc.gov.in> wrote:
>> > Hello,
>> > In EXAFS data modeling carried out by fitting excercise, we develop
>> > mathematical expressions for  different path parametrs as functions of a
>> > smaller set of fitting parameters that can be adjusted to achieve to
>> > best
>> > fit to the data. I am carrying out EXAFS analysis of Eu(III) sorbed on
>> > different environmentally relevent mineral oxides. In conection of this
>> > i
>> > also analysed some reference standard compounds. In developing
>> > expression
>> > for different path parameters, though i developed the expressions using
>> > my
>> > own  understanding and taking help from one of Shelly's tutorial
>> > regarding
>> > SnO2 case, i am not confident. Basically SS2, and deltaE expressions
>> > puzzle me.
>> > Could someone help me in understanding basic approach in developing
>> > their
>> > expressions(for reference Eu2O3 structure could be taken).
>> > Regards,
>> > Sumit
>> >
>> >
>> >
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>>
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