Dr. Guilherme Dalla Lana Semione

Managing duties aimed at establishing a central university core facility (MAPEX-CF) at the University of Bremen encompassing different materials analytics areas such as Electron microscopy, 3D materials analytics, Surface analytics, X-ray diffraction and Spectroscopy.

Bridge the gap between materials science and accelerator physics. Our goal is the understanding of the near-surface region of niobium, which is used in particle accelerators worldwide. Project funded by the Bundesministerium für Bildung und Forschung (BMBF) - cooperation between the University of Hamburg and Deutsches Elektronen-Synchrotron DESY, in Hamburg, Germany.

Study the interaction between nitrogen and niobium in the near-surface region of model samples using X-Ray diffraction, X-Ray spectroscopy and imaging techniques. Our goal is the understanding of the quality factor enhancement observed in Superconducting Radio-Frequency niobium cavities employed in particle accelerators worldwide upon nitrogen thermal treatments.

Study the interaction between nitrogen and niobium in the near-surface region of model samples using X-Ray diffraction, X-Ray spectroscopy and imaging techniques. This work was performed within the scope of the Bundesministerium für Bildung und Forschung (BMBF) project "Performance improvement of SRF cavities by surface treatment including mechanical polishing and nitrogen thermal treatment".

Production and study of nanometric hexagonal nickel sulfides with palladium partial substitution with different characterization techniques, such as powder X-Ray diffraction, electron microscopy, infrared spectroscopy, thermogravimetric analysis and vibrating sample magnetometry.

Synthesis and characterization of magnetite (Fe3O4) particles with powder X-Ray diffraction, electron microscopy and vibrating sample magnetometry.