[Ifeffit] Hephaestus: Absorption Data Source

Robert Gordon ragordon at alumni.sfu.ca
Sun Nov 12 15:56:22 CST 2017


The documentation for Hephaestus lists the same paper as you indicated.
(Access by going to Help-Document in Heph.)

Another reference with values tabulated is:

Natural widths of atomic K and L levels, Kα X‐ray lines and several KLL 
Auger lines
Journal of Physical and Chemical Reference Data 8, 329 (1979);
M. O. Krause and J. H. Oliver

But I have noticed the values differ between that work and those in 
Heph/earlier work.
Krause and Oliver did not even cite that earlier work.


On 11/12/2017 1:28 PM, Daniel Przyrembel wrote:
> Dear All
> This might be a stupid question, but I have not been able to track this
> down myself:
> What is the data source of the "core-hole lifetimes" (i.e. the energy
> widths "gamma(ch)" in eV) of the "Absorption edges" in the "Absorption"
> panel of Hephaestus?
> As far as I could see these lifetimes/widths are not given in the 'Elam
> database'. Other XAS data tools based on the Elam database (like e.g.
> 'XrayDB') claim to be using values from 'O. Keski-Rahkonen and M. O.
> Krause, Atomic Data and Nuclear Data Tables 14, pp139-146 (1974)
> (http://dx.doi.org/10.1016/S0092-640X(74)80020-3)' for this. Because that
> reference does not give tabulated values but rough data plots only, it is
> difficult to compare those with the values in Hephaestus.
> If someone knows the respective data source used in Hephaestus, the
> answer/information is deeply appreciated!
> Best regards
> Daniel
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