Hi Darren,
On Thu, Jun 27, 2013 at 8:48 AM, Darren Dale
Hello All,
If I have a Ta(1-x)Ge(x)O(y) thin film, with Germanium concentration of a few percent, is it possible in principle to get useable fluorescence-mode EXAFS spectra around the Ge K edge (11.1 keV)? Or is it likely that the spectra would be complicated by additional Ge fluorescence excited by processes triggered by Tantalum L edge absorption (9.88, 11.13, 11.68 keV)?
Thanks, Darren
Ack -- I think the Ta L2 edge (33 eV above Ge K edge) is going to make that very hard. You might be able to isolate Ge Kalpha from the Ta L lines with a crystal analyzer, but the change in penetration depth at the Ta L2 edge is going be huge, unless the film is much much less than an absorption length. --Matt