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Coordinator: Gustavo de Medeiros Azevedo

Number: +55 19 3518 3192

E-mail: gustavo.azevedo@lnls.br

The XAFS Group is responsible for managing and operating the XAFS2 and DXAS Beamlines dedicated to X-ray Absorption Spectroscopy in the current UVX synchrotron light source of the Brazilian Synchrotron Light Laboratory (LNLS).

The team of researchers and technicians is responsible for assembling the instrumentation necessary for performing the experiments. They are responsible for advising users in the operation of the equipment, collection and processing of the data obtained in the beamlines.

DXAS BEAMLINE

The DXAS beamline is an experimental station dedicated to dispersive x-ray absorption spectroscopy (acronym for DXAS) techniques, in the hard x-ray energy range (5 to 14 keV). The peculiarity of this beamline is the capability to collect absorption spectra over an extended range of photon energies without any mechanical movement of its optical elements. The DXAS is especially suited for detecting weak signals in XANES (X-ray Absorption Near-Edge Spectroscopy) and XMCD (X-ray Magnetic Circular Dichroism) experiments and for tracking time-dependent evolution of chemical reactions.

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XAFS1 BEAMLINE

The XAFS1 beamline is an experimental station dedicated to X-ray Absorption Spectroscopy in the hard x-rays energy range (4 to 23 keV). This beamline is used in the study of the atomic-level structure as well as in the electronic and magnetic properties of matter, finding applications in a wide range of scientific fields, such as materials science and solid state physics, chemistry, earth sciences and biology. Available techniques include high-edge resolution (XANES) and fine structure spectroscopy (EXAFS).

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XAFS2 BEAMLINE

The XAFS2 beamline is an experimental station dedicated to X-ray Absorption Spectroscopy in the hard x-rays energy range (3.5 to 17.0 keV). It focus on the study of the atomic-level structure as well as in the electronic and magnetic properties of matter, with applications in a wide range of scientific fields, such as atomic and molecular physics, chemistry, biology, environmental and geosciences and cultural heritage. Experimental techniques available include Fluorescence Spectroscopy, X-ray Excited Optical Luminescence, X-ray Reflectivity and Combined X-ray Absorption Fine Structure and X-Ray Diffraction.

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STAFF

Name Position TelephoneEmailCV
Alexey Marques EspindolaScientific Instrumentation Supervisor
Amelie Claire RochetResearcher
Carlos Doro NetoScientific Associate
Gustavo de Medeiros AzevedoResearcher, Leader+55 19 3518 3192gustavo.azevedo@lnls.br
Junior Cintra MauricioScientific Associate
Santiago Jose Alejandro FigueroaResearcher+55 19 3517 5063santiago.figueroa@lnls.br