3D-reconstruction of chemical state distributions in stratified samples by spatially resolved micro-Xray resonant Raman spectroscopy

J. J. LEANI; R.D. PÉREZ; J. ROBLEDO; H. J. SÁNCHEZ

JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY

ROYAL SOC CHEMISTRY

Lugar: CAMBRIDGE; Año: 2017 vol. 32 p. 402 - 407

0267-9477

X-ray resonant Raman scattering was used, for the first time, in a confocal setup with the aim of determiningdifferent compounds of the same element in a copper-multilayer sample. This allowed us to resolvechemical environments with 3D-resolution using a detection system with low energy resolution. Astratified Cu-oxide-sample was studied in the Brazilian Synchrotron Light Laboratory (LNLS) usingmonochromatic radiation and an Energy Dispersive System (EDS) setup. The results are relevant sincethey allowed observing the presence of different oxide-layers, impossible to discriminate withconventional geometries of irradiation. They also permit the characterization of a compound present ata particular depth of the sample with micrometer resolution using a low-resolution system.