Regensburg 2022 – wissenschaftliches Programm

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KFM: Fachverband Kristalline Festkörper und deren Mikrostruktur

KFM 8: Crystallography in Materials Science, Microstructure and Dielectric Properties

KFM 8.7: Vortrag

Montag, 5. September 2022, 17:15–17:35, H7

X-ray diffraction with micrometer spatial resolution for highly absorbing samplesPrerana Chakrabarti1,2, Anna Wildeis1, Markus Hartmann1, Robert Brandt1, Giovanni Fevola2, Christina Ossig2,3, Michael Stuckelberger2, Jan Garrevoet4, Ken Vidar Falch4, Vanessa Galbierz4, Gerald Falkenberg4, and •Peter Modregger1,21Universität Siegen — 2CXNS, DESY, Hamburg — 3Universität Hamburg — 4DESY, Hamburg

We report on a novel goniometer-based setup for X-ray diffraction at high photon energies with micrometer spatial resolution, which was implemented at the P06 beamline of PETRA III. The 6-axes goniometer features 3 translations with 1 nm accuracy and 3 rotations with 0.1 µrad accuracy and allows for 5D scans: 2 in direct and 3 in reciprocal space. Utilizing X-ray focus sizes of 1 µm at a photon energy of 35 keV provided by P06, enables us to characterize the strain field of a 1 mm thick, poly-crystalline martensitic steel sample with micrometer spatial resolution. Further, we experimentally demonstrate the assessment of elemental distribution by fluorescence simultaneous with diffraction for high-Z materials in a ACIGS thin film solar cell. Future plans include the extension of multimodal experiment including ptychography or XBIC and improving spatial resolutions to 200 nm.

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DPG-Physik > DPG-Verhandlungen > 2022 > Regensburg