[Ifeffit] Consult a few questions about XAS data analysis

[desmau]

Le 14.11.2017 15:32, Zhang, Guanghui a écrit :
> Jun,
> You can find many of Bruce's presentations on XAS through this link.
> http://bruceravel.github.io/XAS-Education/ [1]
>
> Bruce also wrote a very nice Artemis user's guide. I would suggest
> you to take a look.
> https://bruceravel.github.io/demeter/documents/Artemis/index.html [2]
>
>
> Good luck!
>
> --
>
> Regards,
> Guanghui
>
> At 2017-11-14 14:21:38, "Jun Ge" <gejun1995 at gmail.com> wrote:
>
>> Hi Bruce
>>
>> I'm a learner for XAS data analysis because of the need of
>> scientific research.
>>
>> I have been to SLAC in San Francisco three times last year and
>> collected some XAS data of samples and models in Beamline 7-3. This
>> summer, I began to learn how to analyze these XAS data.
>>
>> My professor used to use WinXAS to analyze data. But this time he
>> asked me to learn Athena. He thinks use two different softwares can
>> double check the result.
>>
>> After the data pro-processing, including background remove and data
>> normalization, etc., I save each spectrum in the form .txt.
> However,
>> IN THE SAME ENERGY RANGE AND SAME FILE OF SAMPLE AND MODELS, THE
>> RESULT OF LCF PERFORMED BY WINXAS AND ATHENA WAS TOTALLY DIFFERENT!
>> I try to solve this problem for a long time but no progress was
>> made. So I turn to you and Ressler (the author of WinXAS) for help.
>> I guess may be the algorithm is different between your Athena with
>> WinXAS, but I'm not sure. With great experience in XAS data
>> analysis, I think it's easy for you to solve this problem, isn't
> it?
>>
>> By the way, I DON'T KNOW HOW TO FIT THE COORDINATION NUMBER IN
>> ANOTHER SOFTWARE CALLED ARTEMIS in the software package of Demeter.
>> I was told by Artemis that the coordination number can only be a
>> number not alphabet. So I have no idea how to do this (yeah, I'm
>> really a noob orz). And I don't know how to set the parameter more
>> correctly to run a excellent Feff fit. So could you please help me?
>
>>
>> Finally, I WANT TO LEARN XAS DATA ANALYSIS SYSTEMATICALLY. SO COULD
>> YOU PLEASE RECOMMEND ME SOME REFERENCES LIKE BOOKS OR PAPERS?
>>
>> Anyway, thanks a lot for your help and your precious time!
>>
>> Sincerely,
>> Jun Ge
>
>
> Links:
> ------
> [1] http://bruceravel.github.io/XAS-Education/
> [2] https://bruceravel.github.io/demeter/documents/Artemis/index.html

-- 
Morgane DESMAU

Doctorant/PhD student
Institut de Physique du Globe de Paris
Équipe de Géochimie des Eaux
1, rue Jussieu - 75238 Paris cedex 05

Mail: desmau at ipgp.fr
Phone: +33 1 83 95 77 33