Open AccessA new FEFF ‐based wavelet for EXAFS data analysis
Author(s) -
Funke Harald,
Chukalina Marina,
Scheinost Andreas C.
Publication year - 2007
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s0909049507031901
Subject(s) - extended x ray absorption fine structure , morlet wavelet , wavelet , materials science , wavelet transform , physics , optics , absorption spectroscopy , computer science , discrete wavelet transform , artificial intelligence
A new mother wavelet function for extended X‐ray absorption fine‐structure (EXAFS) data analysis has been designed, combining a model EXAFS function derived from the ab initio EXAFS code FEFF 8.20 and the complex Morlet wavelet. This new FEFF –Morlet mother wavelet routine allows the generation of wavelets well adapted to specific EXAFS problems. A substantial gain in resolution of the wavelet ridges in k and r space is achieved. The method is applied to a structural problem of Zn–Al double‐layer hydroxides, demonstrating unequivocally the homogeneity of the metal cation distribution in the hydroxide layers.