Impact Factor (IF): 0 Journal Citation Indicator (JCI): 0. Powder diffraction is a scientific technique using X-ray, neutron, or electron. Each atom scattering contributes a harmonic oscillatory mode, together they form a complex quasiperiodic EXAFS signal: Fourier analysis of the signal resolves the harmonic components into a probability vs distance diagram.Įxtraction of the EXAFS (the quasi-periodic modulations of the X-ray absorption coefficient above the edge) consists of several steps, pictorially represented above. Abbreviation: X-RAY STRUCT ANAL ON ISSN: 1883-3578 eISSN. Journal impact factor : 0.94 Average acceptance to publication time (5-7. Consequently, its wavelength varies, and the interference of the wavelets changes from constructive to destructive and back again. When the absorption spectrum is scanned by changing the photon energy, the energy of the photoelectron changes. The interference pattern of the photoelectron wavelets modifies the probability of the photoeffect. \) of the neighboring atom, EXAFS is also sensitive to the atomic species of the neighboring atom.
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