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Journal Articles Scientific Reports Year : 2018

Advanced high resolution x-ray diagnostic for HEDP experiments

N. Ozaki
K. Katagiri
K. Miyanishi
T. Yabuuchi
A. Casner

Abstract

High resolution X-ray imaging is crucial for many high energy density physics (HEDP) experiments. Recently developed techniques to improve resolution have, however, come at the cost of a decreased field of view. In this paper, an innovative experimental detector for X-ray imaging in the context of HEDP experiments with high spatial resolution, as well as a large field of view, is presented. The platform is based on coupling an X-ray backligther source with a Lithium Fluoride detector, characterized by its large dynamic range. A spatial resolution of 2 µm over a field of view greater than 2 mm2 is reported. The platform was benchmarked with both an X-ray free electron laser (XFEL) and an X-ray source produced by a short pulse laser. First, using a non-coherent short pulse laser-produced backlighter, reduced penumbra blurring, as a result of the large size of the X-ray source, is shown. Secondly, we demonstrate phase contrast imaging with a fully coherent monochromatic XFEL beam. Modeling of the absorption and phase contrast transmission of X-ray radiation passing through various targets is presented.
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Dates and versions

hal-01925274 , version 1 (16-11-2018)

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A. Y. Faenov, T. A. Pikuz, P. Mabey, Bruno Albertazzi, Th. Michel, et al.. Advanced high resolution x-ray diagnostic for HEDP experiments. Scientific Reports, 2018, 8 (1), pp.16407 (2018). ⟨10.1038/s41598-018-34717-9⟩. ⟨hal-01925274⟩
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