[Ifeffit] [Ext] Dumb question

[Robert Gordon]

So your goal is to plot If/I0 versus time for a given energy in the XANES.
Are you exporting normalised XANES or just If/I0?
Are you doing background removal from the pre-edge?

Is another feature underlying this targeted feature also disappearing or
changing? i.e. you are not watching a feature
increase from zero but instead changing from one to another? ...or seeing a
background increase as well?

Was the fluorescence measured using a solid state detector? Did the
deadtime of the detector increase significantly
as the signal from the sample increased (and no deadtime correction
applied) ?

-R.



On Thu, Feb 16, 2023 at 10:53 AM Roberta Candela <rjcandel at asu.edu> wrote:

> Ha no worries! It would be Ifinal over time (to my vague understanding).
> I’m trying to show that the sample was saturated by looking above the
> fluorescence k-alpha line (or I guess it’s called the white line?) because
> the intensity should increase and then level off once it’s saturated. This
> is a xanes scan but we were doing fluorescence instead of transmission
> since it was a dilute sample.
> Did that answer the question? My apologies I’m very new and I’m sure im
> referring to things incorrectly.
>
>
>
> Sent from Yahoo Mail for iPhone
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> On Thursday, February 16, 2023, 12:45 PM, Carlo Segre <segre at iit.edu>
> wrote:
>
> Hi Robert:
>
> What, exactly are you interested in plotting?  It is not quite clear from
> your message.  Is it the Io as a function of time during a scan?  Is it the
> XANES scans as a function of time for a reaction?
>
> Carlo
>
> On Thu, Feb 16, 2023 at 11:59 AM Roberta Candela <rjcandel at asu.edu> wrote:
>
> Hi all, I am attempting to graph a simple plot of intensity vs time for
> some supplemental info on a paper (from XAFS data from beamtime). I thought
> it should be simple enough since I can export I0 and If from Athena and I
> know the run time and time per data point but I can’t get anything that
> looks remotely like the logarithmic graph it should be. Am I missing some
> big fundamental point for why this isn’t possible? My apologies if this is
> way too vague!/I feel like I’m missing something super obvious
> Thank you for your time!
> Sincerely
> -B
>
>
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