ON THE NATURE OF NONSTRUCTURAL LOW-R PEAK IN FOURIER TRANSFORMS OF SOME EXAFS-SPECTRA

A. G. KOCHUR, A. M. NADOLINSKY, V. F. DEMEKHIN
1986 Le Journal de Physique Colloques  
K-absorption spectra of kripton and zirconium are calculated considering additional monopole excitations of 3d-shell. It i s shown t h a t the disturbance of smoothness of t h e atomic photoionization cross section due t o multi-electron excitations including 3d-shells lea.' t o t h e appearance 04 low frequency W S -o s c i l l a t i o n s t h a t do not coxespond t o the structure of atomic encirclement of t h e absorber. Such an e f f e c t can make data analyses d i f f i c u l t f o r the
more » ... c u l t f o r the spectra with weak s t r u c t u r a l signal.
doi:10.1051/jphyscol:1986814 fatcat:koi2c6n2gbcrhbisdi3jn2ekoa