[Ifeffit] Requesting guidance in understanding results from Athena

Deepak Varanasi tirrano1 at gmail.com
Sun Sep 13 16:39:59 CDT 2020


Good afternoon

I understand. In that case, would it be possible for you to perhaps guess
the greatest factor causing this problem? My apologies if I may be asking
for too much.

Yours sincerely
Deepak Varanasi

On Sun, Sep 13, 2020, 16:39 Deepak Varanasi <tirrano1 at gmail.com> wrote:

> Good afternoon
>
> That makes sense. Thank you. I am glad and honored to have seeked all your
> guidance. Thank you, everyone.
>
> Yours sincerely
> Deepak Varanasi
>
> On Sun, Sep 13, 2020, 16:37 Mike Massey <mmassey at gmail.com> wrote:
>
>> It sounds to me like you are understanding things well. The short, short
>> version is that the purpose of the rbkg parameter is to filter out the
>> low-frequency oscillations (arising from any of numerous sources) in the
>> spectrum, that correspond to interatomic distances that make no physical
>> sense.
>>
>> Or maybe I don't get it either ;)
>>
>> Scott Calvin's book has a nice discussion of these points, I recommend it.
>>
>>
>> Kind Regards,
>>
>>
>>  Mike
>>
>>
>>
>>
>> On Sep 14, 2020, at 9:18 AM, Deepak Varanasi <tirrano1 at gmail.com> wrote:
>>
>> 
>>
>> Good afternoon
>>
>>
>>
>> The problem lies with understanding the meaning behind signals occurring
>> below the 1-angstrom mark. The location of the peaks and the physical
>> meaning thereof are making no sense to me. Kindly provide me with your
>> guidance in facilitating my understanding.
>>
>>
>>
>> Yours Sincerely
>>
>> Deepak Varanasi
>>
>>
>>
>> Sent from Mail <https://go.microsoft.com/fwlink/?LinkId=550986> for
>> Windows 10
>>
>>
>>
>> *From: *Anatoly Frenkel <anatoly.frenkel at stonybrook.edu>
>> *Sent: *Sunday, September 13, 2020 12:58
>> *To: *XAFS Analysis using Ifeffit <ifeffit at millenia.cars.aps.anl.gov>
>> *Subject: *Re: [Ifeffit] Requesting guidance in understanding results
>> from Athena
>>
>>
>>
>> Where is the conundrum? You make rbkg smaller and you see more low
>> frequency features in EXAFS, as expected.
>>
>> Anatoly
>>
>>
>>
>>
>>
>>
>>
>> On Sun, Sep 13, 2020 at 1:47 PM Deepak Varanasi <tirrano1 at gmail.com>
>> wrote:
>>
>> Good afternoon
>>
>>
>>
>> I hope that you are doing well and are healthy. My name is Deepak
>>
>> Varanasi and ii am an undergraduate student at Middle Tennessee State
>> University In need of your guidance for my thesis project. I am having
>> trouble interpreting results for my EXAFS analysis done on Athena –
>> specifically, the emergence of a signal in R-space, below the 1 – angstrom
>> mark,  after suppressing it via its rbkg parameter (signified by the black
>> arrows). I have checked my back ground reduction and normalization multiple
>> time sand have failed to isolate the reason behind my results or maybe it
>> is the due to the gaps in my knowledge that prohibit my understanding of
>> the results. At the risk of sounding armature, may I request your guidance
>> in resolving my conundrum please? I would be honored to have your council
>> in solving, understanding and comprehending the physical and chemical
>> implications of my results. For your convenience, I have also appended a
>> picture of my results to illustrate my query. Kindly contact me at your
>> earliest convenience and please stay safe and healthy.
>>
>>
>>
>> Yours Sincerely
>>
>> Deepak Varanasi
>>
>>
>>
>> P.S.: For your convenience, I have also appended a picture of my results
>> to illustrate my query.
>>
>>
>>
>> <57BA12E4C0E6403EA1E7F05BCB60610D.png>
>>
>>
>>
>> <EA39B14C51484FAFBA570A6B7FB2E046.png>
>>
>>
>>
>>
>>
>> Resulting R – space graphs: -
>>
>>
>>
>> <13111BEC5BCF46A8A8E5CDAE32782D44.png>
>>
>>
>>
>>
>>
>> <C7930CEA51084A03A840FC32E885015D.jpg>
>>
>>
>>
>> <4A7FE6C9D4EC4E0F83E8B43E23D5ED48.png>
>>
>>
>>
>> Resulting R – space graphs: -
>>
>>
>>
>>
>>
>> <83E495E5D37B431AB31567B6ED982716.png>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> _______________________________________________
>> Ifeffit mailing list
>> Ifeffit at millenia.cars.aps.anl.gov
>> http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit
>> Unsubscribe: http://millenia.cars.aps.anl.gov/mailman/options/ifeffit
>>
>>
>> _______________________________________________
>> Ifeffit mailing list
>> Ifeffit at millenia.cars.aps.anl.gov
>> http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit
>> Unsubscribe: http://millenia.cars.aps.anl.gov/mailman/options/ifeffit
>>
>> _______________________________________________
>> Ifeffit mailing list
>> Ifeffit at millenia.cars.aps.anl.gov
>> http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit
>> Unsubscribe: http://millenia.cars.aps.anl.gov/mailman/options/ifeffit
>>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://millenia.cars.aps.anl.gov/pipermail/ifeffit/attachments/20200913/138359d9/attachment-0001.htm>


More information about the Ifeffit mailing list