Electrochemical determination of the absolute cross-section of giant Raman light scattering by silver-silver adatom complexes

The procedure of the determining of changes in the background intensity in the giant Raman light scattering spectra at silver surface in solutions of silver salts, under the action of current changes during galvanostatic silver electrodeposition near the silver electrode equilibrium potential, suggested by authors, is substantiated. Expressions for the calculations of the quantitative values of the absolute background cross-section of the giant Raman light scattering, which is caused by the interaction of the metal electron plasma with silver adatoms, are derived. The relationship between the silver adatom concentration and the back-ground intensity in the giant Raman light scattering spectra allows estimating the absolute cross-section of the background of the giant Raman scattering for the metal-adatom complexes (1.02 × 10⁻²⁷ cm²/adatom) from preliminary experiments in sulfate solutions.