METHOD OF QUANTITATIVE DETERMINATION OF CHEMICAL COMPOSITION OF SUBSTANCE AND BINDING ENERGY OF CORE ELECTRONS Russian patent published in 2001 - IPC

FIELD: analysis of materials with use of X-radiation, nondestructive analysis of chemical composition of multicomponent materials and determination of binding energy of core level of atom being in certain chemical state. SUBSTANCE: method includes measurement of line of photoelectron spectrum of at least one element, its decomposition by known set of elementary components corresponding to various chemical phases and known sequence of binding energy of core electrons of selected element in these phases, minimization of functional of errors between measured spectral line and summary calculated envelope of set of elementary components with selection of their amplitudes and width in the capacity of free parameters and determination of sought-for composition by relative contribution of these components into decomposed spectral line with account for stoichiometry of chemical phases. In correspondence with formula of invention above-mentioned operations are carried out per each line of two or more selected elements, binding energy of elements in various chemical phases being taken as free parameters and results obtained for all spectral lines being compared. Free parameters are varied till results match with due account of specified error. EFFECT: possibility to determine both chemical composition of complex compounds and binding energy of elements without use of standards. 6 dwg, 2 tbl