[Ifeffit] Header information data Lepidocrocite

[George Sterbinsky]

Hi Florian,

The acronyms stand for

Scan Region Boundary
Scan Region Step Size
Seconds Per Point

Best,
George



On Tue, Nov 5, 2013 at 6:51 AM, daltonabdala at gmail.com <
daltonabdala at gmail.com> wrote:

> Hello, Florian.
>
> Welcome to the list!
>
> I watched Bruce's video a while ago and I can not remember what those
> acronyms stand for.
>
> As for the 15k, that means how far in k (k A-1) he collected his EXAFS
> data. You're missing an important information: E (eV) ~ 3.81 k2. Now, do
> the math! Hope that'll make things more clear to you :)
>
> As for the k steps, 0.05k, that was the way he collected his data, in
> k-steps, instead of energy steps. I usually collect XANES data in E-steps
> and switch to k-steps to collect EXAFS data.
>
> I'm not sure if this is a proper venue to make advertisements but Scott
> Calvin has recently published an excellent book on XAFS, XAFS for Everyone,
> and I would suggest you to refer to it at your earliest convenience, so you
> can work on your "backgrounds" more effectively :)
>
>
> Good luck!
>
>
>  - Dalton
>
>
> On Tue, Nov 5, 2013 at 9:27 AM, Florian Werner <florian.werner at wzw.tum.de>wrote:
>
>>  Hi All,
>>
>> I'm trying to find my way into XAFS data processing with Athena, but I'm
>> new to the topic. I hope someone can help me out with my questions. As
>> background information: Currently I'm planning my beamtime experiment for
>> XANES spectra about phosphorus speciation at SLRI in Thailand.
>>
>> I have made a tutorial with data from Bruce Ravel from scans of
>> Lepidocrocite. I have a question regarding this data. For example in the
>> header information of file Fe_lepidocrocite.000 (from Bruce Ravel's github
>> site) there can be found the abbreviations SRB, SRSS and SPP. So my first
>> question is: What do this abbreviations stand for? SRB is the sampling
>> range (SR..?!), i guess, so what does 15k stand for (data ends at
>> 7971.35723 keV, but how is this connected to "15k"?)? SRSS manages the step
>> size (..SS?), but how does "0.05k" result in the given steps?
>>
>> I assume that this kind of "k"-settings may be limited to X-23A2 beamline
>> (or BNL), but still I'm anxious to know how the data has been collected.
>>
>> Best regards,
>>
>> Florian
>>
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>>
>
>
>
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