Affiliation:
1. Institute of Physics, Jagiellonian University, Łojasiewicza 11, 30-348 Kraków, Poland
Abstract
Abstract
The influence of matrix effects i.e. beam attenuation (BA) and
indirect excitation (IE) on local structure imaging with
multiple-energy x-ray fluorescence holography is studied using
computer simulations. An analytic formalism is developed which allows
for the description of BA and IE when the thickness of the sample is
arbitrary. It is shown that beyond the thin-sample approximation, in
specific cases, the measured holograms cannot be treated as entirely
element sensitive. Consequently, it is demonstrated that due to the
reduction of element sensitivity, spurious maxima can arise in the
holographic reconstruction which can be misinterpreted as atomic
images. The proposed formalism allows one to analyse BA and IE and to
correct for them. It opens way for quantitative interpretation of
x-ray fluorescence holograms.
Subject
Physical and Theoretical Chemistry
Cited by
1 articles.
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