OBTAINING SURFACE LOCAL ATOMIC-STRUCTURE BOND LENGTHS FROM SECONDARY-ELECTRON EXTENDED FINE-STRUCTURE - INVERSE PROBLEM SETTING AND SOLVINGFOR COPPER

The oscillation in the secondary spectra (extended fine structure) con tains the surface (similar to 3-5 atomic layers) local atomic structur e information in the form of the radial distribution function. For the latter determination from the 3d metals secondary electron extended f ine structure the inverse problem has been setting. On this basis the mathematical treatment of the experimental copper spectra was performe d. The separation of the first three peaks and their approximately rig ht positions in the calculation result was obtained.