A neural network reconstruction approach for obtaining parallax-free X-ray powder diffraction computed tomography data from large samples

27 September 2023, Version 1
This content is a preprint and has not undergone peer review at the time of posting.

Abstract

In this study, we introduce an innovative method designed to eliminate parallax artefacts present in X-ray powder diffraction computed tomography data acquired from large samples. Our approach integrates a unique 3D neural network architecture with a forward projector that accounts for the experimental geometry. This self-supervised technique for tomographic volume reconstruction is designed to be chemistry-agnostic, eliminating the need for prior knowledge of the sample's chemical composition. We showcase the efficacy of this method through its application on both simulated and experimental X-ray diffraction tomography data, acquired from a phantom sample and a commercially available and industrially relevant NMC532 cylindrical Lithium-ion battery.

Keywords

xrdct
li-ion
battery
diffraction
tomography
xrd-ct
x-rays

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