Thank you for your kind suggestion, Fred. It gives me some ideas of how to
design my next experiment. And I will also try to do self absorption
correction and see if it helps at the current stage.
Weizi
--
Regards,
Weizi Yuan,
Graduate Student,
Northwestern University,
Ph:(+1)312-560-9619
Hi Weizi,
I know this is rather after the event, but should you do the experiment again,
it is probably much easier to get surface sensitivity in this sort of system
using conversion electron yield e.g. Schroeder et al Surface Science Volume
324, Issues 2-3, 10 February 1995, Pages L371-L377.
It is all self-absorption (over-absorption) that explains the difference. Ce 3+
will appear as a separate shoulder below the first peak and there is no
evidence of this contribution in the spectra.
These effects, including the difference between the spectra of the powder and
film CeO2 due to
Dear all,
I have measured some XANES spectra of CeO2 film(~220nm) in fluorescence
mode at Ce L3 edge with two incident angles of 0.6 degree and 3 degree. My
goal is to get relative surface sensitive (penetration depth~ 20 nm above
edge) information of [Ce3+] from 0.6 o while bulk sensitive
