Regensburg 2016 – wissenschaftliches Programm

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MI: Fachverband Mikrosonden

MI 7: Poster: Microanalysis and Microscopy

MI 7.5: Poster

Mittwoch, 9. März 2016, 18:00–20:00, Poster E

First results of ptychographic imaging at MAXYMUS X-ray microscope — •Iuliia Bykova, Markus Weigand, Michael Bechtel, Joachim Gräfe, Eberhard Goering, and Gisela Schütz — Max-Planck-Institut für Intelligente Systeme, Heisenbergstraße 3, 70569 Stuttgart, Germany

Ptychography is a recently established and actively developing technique for producing highly resolved images. This method is a combination of x-ray diffraction imaging with scanning microscopy which aids to visualize objects with spatial resolution not limited by the properties of the used optics. MAXYMUS is an Ultra-High Vacuum Scanning Transmission X-ray Microscope (STXM) operated by the MPI for Intelligent Systems at the Bessy II synchrotron (Berlin, Germany). The feasibility of high brightness and selectable polarization measurements make it a unique tool for studying magnetic materials in an element specific manner. To allow high resolution ptychographic imaging MAXYMUS was upgraded with a new fast in-vacuum CCD camera with high readout speed up to 450 Hz, quantum efficiency >70% (for E>300 eV) and RMS noise per pixel less than 3e-. We will present the results of commissioning of the new in-vacuum CCD camera and the implementation of ptychographic imaging at MAXYMUS. We will show the first ptychographic reconstructions made at MAXYMUS which have significant advantage in resolution over images done using conventional STXM methods.