[Ifeffit] Reported W L3-edge and L2-edge energy
mamarcus at lbl.gov
Tue May 5 17:32:40 CDT 2020
Kraft, S., Stümpel, J., Becker, P., & Kuetgens, U. (1996). High
resolution x‐ray absorption spectroscopy with absolute energy
calibration for the determination of absorption edge energies. Review of
Scientific Instruments, 67(3), 681-687.
has precision measurements of a bunch of edges including the Pt L-edges.
It shows an L3 energy of 11562.76(2)eV. It refers to an older
tabulation as well. If you look at various tables, you find energies
that vary considerably. For instance, the paper cited above has the Fe
K-edge as 7110.75eV, while some tabulations have it at 7112.
On 5/5/2020 3:14 PM, Bare, Simon R wrote:
> We are wondering if others agree that the reported values for the W L3
> and W L2 edges are *incorrect*. We recently noticed the following:
> The “Edge” – defined by the inflection point of the absorption edge step
> When using the Ir L_3 edge (11215.0 eV) as a calibration, the W L_3 -
> and L_2 -edges are *10203.4 eV* and *11542.4 eV*, respectively.
> When using the Pt L_3 edge (11564.0 eV) as a calibration, the W L_3 -
> and L_2 -edges are *10203.3 eV* and *11542.4 eV*, respectively.
> These observations are thus different than the reported values of
> *10207.0 eV* and *11544.0 eV* for the L_3 and L_2 edges, respectively.
> Thanks in advance for the discussion and feedback.
> Simon R Bare
> /Distinguished Scientist/
> /SSRL, MS69/
> /SLAC National Accelerator Lab/
> /2575 Sand Hill Road/
> /Menlo Park CA 94025/
> simon.bare at slac.stanford.edu <mailto:simon.bare at slac.stanford.edu>
> Ph: 650-926-2629
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