Confocal X-ray Resonant Raman in combination with Multivariate Methods for Reconstruction of Chemical State Distributions in Stratified Samples

JUAN JOSÉ LEANI; D. PEREZ; JOSE ROBLEDO; H.J. SÁNCHEZ

Brescia

Congreso; International Conference on Total Reflection X-Ray Fluorescence Analysis and Related Methods (TXRF2017).; 2017

University of Brescia

X-ray resonant Raman scattering (RRS) was used in a confocal setup with the aim of determining differentcompounds of the same element in a copper-multilayer sample. This allowed us to resolve chemical environmentswith 3D-resolution using a detection system with low energy resolution. A stratified Cu-oxide-sample was studied inthe Brazilian Synchrotron Light Laboratory (LNLS) using monochromatic radiation and an Energy Dispersive System(EDS) setup. The results are relevant since they allowed observing the presence of different oxide-layers, impossibleto discriminate with conventional geometries of irradiation. They also permit the characterization of a compoundpresent at a particular depth of the sample with micrometer resolution using a low-resolution system.