Hi Chris,
Thanks for the suggestion, I'll give it a try on the morrow.
Interestingly enough, I loaded up the non-truncated version of this spectrum
for comparison purposes, and...The extended background is pretty flat but not
really increasing. If I use it for normalization, the edge jump
Hi Mike,
I would suggest that, as Carlo mentions, that because you cut off at 2200 eV,
the post edge background function in purple might be skewed a bit. I might be
use values ~2190 eV and 2164 eV? Though it appears to be a “flat” region where
you place the points, it may actually not be all
Hi Scott,
I collect up to 2240 eV often, because that's about where the mirror stops, but
end up truncating it at 2200 eV before fitting because sometimes I end up with
all sorts of non-systematic background things at higher energies, depending on
the sample.
I still collect the data because
Hi Mike,
Is there a reason the data stops at 2200 eV—e.g., is there another edge just
above that?
—Scott
> On Jan 15, 2019, at 8:02 PM, Mike Massey wrote:
>
> Thanks Riti and Carlo.
>
> Riti: will give it a go, thanks! I think the data are salvageable, it's just
> a question of how...
>
>
Thanks Riti and Carlo.
Riti: will give it a go, thanks! I think the data are salvageable, it's just a
question of how...
Carlo: Interesting point. In terms of how I'm fitting it, I just use the LCF
window to do a two-component fit. Nothing super fancy.
But what you're suggesting is that maybe
Hi Mike:
How are you trying to fit it? It looks to me like the post edge line is
not in the right place. You need to tune it by hand when you have such a
short energy range after the edge since the normalization is critically
dependent on how you set this line.
carlo
On Tue, 15 Jan
Thanks for the response!
I should clarify, the data are collected in fluorescence, concentration is
perhaps in the hundreds of ppm to tenths-of-percent range in this case.
Personally I haven't had great luck with self-absorption correction in the past
(actually I've had basically no luck), so
Hello, Mike et al.,
you can correct for self-absorption using the "self-absorption correction
tool" in Athena, as long as the chemical composition of your sample is
known.
In case it's not possible to determine the chemical composition of you
sample, and your sample is conductive, then running
Hi,
I am working with a molten salt system with Nickel Chloride as one of the
components. If you have measured XAS data on anhydrous and hydrated Nickel
Chloride at RT and 320C, I would really appreciate if you could share the raw
data with me.
Thanks in advance for your help!
Simer
