Mainz 2026 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 32: Interaction with VUV and X-ray Light I (joint session A/MO)

A 32.6: Vortrag

Donnerstag, 5. März 2026, 16:00–16:15, N 2

Fast Simulation of Wide-Angle Coherent Diffractive Imaging — •Paul Tuemmler, Julia Apportin, Thomas Fennel, and Christian Peltz — Institute of Physics, University of Rostock 18051, Rostock, Germany

Single-shot coherent diffractive imaging with intense XUV and soft X-ray pulses offers the exciting possibility of retrieving both the 3D structure and optical properties of nanoscale objects from a single diffraction pattern. Achieving this, however, requires an accurate description of the underlying wide-angle scattering and propagation effects, which are significantly more complex than in conventional X-ray diffraction.

In this talk, I will introduce the propagation multi-slice Fourier transform method (pMSFT) [1], a fast and accurate approach for simulating the scattering process in this regime. I will outline its derivation from first principles, introduce a unified physical picture to show its relation to existing methods, and finally present systematic benchmarks demonstrating its superior performance for wide-angle scattering.
[1] P. Tuemmler, et al., Laser Photonics Rev (2025): e02001

https://doi.org/10.1002/lpor.202502001

Keywords: coherent diffractive imaging; field propagation; multi-slice method; single-shot imaging; split-step simulation