Multiple solutions in data fitting: a trap in EXAFS structural analysis and some ideas to avoid it.
A possible source of error on interatomic distance determination in EXAFS multishell data analysis is described on the basis of fitting a simulated signal for a cluster of Rh atoms with an interaction of O atoms; a fit of an experimental signal is also presented. The origin of this type of mistake is briefly discussed.
Michalowicz
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Department of Physics, University of Paris XII, 61 Avenue De Gaulle, 94010 Creteil, France.
Vlaic
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