Erlangen 2022 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 68: Quantum Cooperativity (joint session Q/SYQC)
Q 68.2: Vortrag
Freitag, 18. März 2022, 10:45–11:00, Q-H15
A software pipeline for simulating and evaluating incoherent diffraction imaging — •Sebastian Karl1, Stefan Richter1, Fabian Trost2, Henry Chapman2, Ralf Röhlsberger3, and Joachim von Zanthier1 — 1University of Erlangen-Nuremberg, Staudtstr. 1, 91058 Erlangen — 2Center for Free-Electron Laser Science, Notkestraße 85, 22607 Hamburg — 3Helmholtz-Institute Jena, Max-Wien-Platz 1, 07743 Jena
Conventional x-ray crystallography relies on coherent scattering for high resolution structure determination. However often the predominant scattering mechanism is an incoherent process like fluorescence, introducing severe background in the coherent diffractogram. Incoherent diffractive imaging (IDI) aims to use this incoherently scattered light for structure determination by measuring second order correlations n the far field [1]. While in theory single shot 3d imaging would be possible using IDI, careful theoretical examinations place thresholds on its feasibility in both the high [2] and low [3] photon limit. We present a software pipeline facilitating simulation and evaluation of IDI images of structures ranging from crystals to mircometer-size masks. Since this pipeline is able to account for mode mixing identified as the main obstacle in [3], it enables realistic estimations of necessary photon fluxes and image shot numbers for IDI experiments.
[1] A. Classen et al, PRL 119, 053401, 2017
[2] F. Trost et al., New J. Phys. 22, 083070, 2020
[3] L. M. Lohse, Acta Cryst. A 77, 480-496, 2021