Dresden 2017 – wissenschaftliches Programm

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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 7: Synchrotron Radiation and FELs

AKBP 7.12: Vortrag

Donnerstag, 23. März 2017, 12:30–12:45, MOL 213

Predicting SAXS images beyond single scattering — •Marco Garten^1,2, Alexander Grund^1,2, Axel Huebl^1,2, Heiko Burau^1,2, René Widera¹, Thomas Kluge¹, Carsten Fortmann-Grote³, and Michael Bussmann¹ — ¹HZDR, Dresden, Deutschland — ²TU Dresden, Dresden, Deutschland — ³European XFEL GmbH

Laser-generated solid density plasmas can be used to produce highly energetic electrons and ions. Diagnosing properties within those plasmas at nm length scales and down to fs time scales plays a crucial role in understanding the involved processes. This has only recently become feasible through the advent of X-Ray Free Electron Lasers (XFELs). XFELs now make experimental techniques like Small Angle X-Ray Scattering (SAXS) applicable to solid density plasmas.

We present a scalable GPU-based software framework for simulating photon scattering processes of X-ray beams in matter using Monte-Carlo methods. These simulations enable us to produce synthetic SAXS signals from the interaction of a modeled X-ray pulse with an arbitrarily complex, 3D electron density distribution obtained e.g. from detailed particle-in-cell simulations. Our new framework allows for single and multiple scattering and is extendable to include complex physics processes like ionization, atomic excitation and de-excitation to further enhance its predictive capability.