ON THE NATURE OF NONSTRUCTURAL LOW-R PEAK IN FOURIER TRANSFORMS OF SOME EXAFS-SPECTRAReport as inadecuate




ON THE NATURE OF NONSTRUCTURAL LOW-R PEAK IN FOURIER TRANSFORMS OF SOME EXAFS-SPECTRA - Download this document for free, or read online. Document in PDF available to download.



Abstract : K-absorption spectra of kripton and zirconium are calculated considering additional monopole excitations of 3d-shell. It is shown that the disturbance of smoothness of the atomic photoionization cross section due to multi-electron excitations including 3d-shells lead to the appearance of low frequency EXAFS-oscillations that do not correspond to the structure of atomic encirclement of the absorber. Such an effect can make data analyses difficult for the spectra with weak structural signal.





Author: A. Kochur A. Nadolinsky V. Demekhin

Source: https://hal.archives-ouvertes.fr/



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