PURPOSE: A method for improving resolution in an analysis of an extended x-ray absorption fine structure spectrum of a solid is provided, in which atom groups mixed by Fourier transformation are able to be separated so that increasing the resolution, obtain a real radial distribution and directly and precisely obtain a distance between atoms without fitting by a RegXAFS program. CONSTITUTION: A method for improving resolution in an analysis of an extended x-ray absorption fine structure spectrum of a solid includes the steps of making a filtered extended x-ray absorption fine structure(EXAFS) spectrum of a solid by reading raw data, extracting a filtered EXAFS spectrum and carrying out Fourier transformation and inverse Fourier transformation with relation to the extracted filtered EXAFS spectrum(S10), producing Kernel data(S20), and carrying out a RegXAFS program for analyzing the EXAFS spectrum.
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