Journal Article

PUBDB-2024-04811

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Nanoscale dark-field imaging in full-field transmission X-ray microscopy

Wirtensohn, S. (Corresponding author)Extern*Hereon* ; Qi, P.Extern* ; David, C.Extern* ; Herzen, J.Extern* ; Greving, I.HZG*Hereon* ; Flenner, S.Extern*HZG*Hereon*

2024
Optica Washington, DC

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Please use a persistent id in citations: doi:10.1364/OPTICA.524812  doi:10.3204/PUBDB-2024-04811

Abstract: The dark-field signal uncovers details beyond conventional X-ray attenuation contrast, which is especially valuable for material sciences. In particular, dark-field techniques are able to reveal structures beyond the spatial resolution of a setup. However, its implementation is limited to the micrometer regime. Therefore, we propose a technique to extend full-field transmission X-ray microscopy by the dark-field signal. The proposed method is based on a well-defined illumination of a beam-shaping condenser, which allows to block the bright field by motorized apertures in the back focal plane of the objective lens. This method offers a simple implementation and enables rapid modality changes while maintaining short scan times, making dark-field imaging widely available at the nanometer scale.

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Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)
2. Helmholtz-Zentrum Hereon (Hereon)

Research Program(s):

1. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)
2. SFB 986 Z02 - Multiskalige Analyse von Strukturen und Prozessen mit Synchrotronstrahlung und Neutronen (Z02) (221133217) (221133217)

Experiment(s):

1. PETRA Beamline P05 (PETRA III)

Appears in the scientific report 2024

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