High-Sensitivity X-ray Phase Imaging System Based on a Hartmann Wavefront Sensor - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Condensed Matter Année : 2022

High-Sensitivity X-ray Phase Imaging System Based on a Hartmann Wavefront Sensor

Ginevra Begani Provinciali
Martin Piponnier
  • Fonction : Auteur
Laura Oudjedi
  • Fonction : Auteur
Xavier Levecq
  • Fonction : Auteur
Fabrice Harms
  • Fonction : Auteur
Alessia Cedola
  • Fonction : Auteur
Ombeline de La Rochefoucauld
  • Fonction : Auteur

Résumé

The Hartman wavefront sensor can be used for X-ray phase imaging with high angular resolution. The Hartmann sensor is able to retrieve both the phase and absorption from a single acquisition. The system calculates the shift in a series of apertures imaged with a detector with respect to their reference positions. In this article, the impact of the reference image on the final image quality is investigated using a laboratory setup. Deflection and absorption images of the same sample are compared using reference images acquired in air and in water. It can be easily coupled with tomographic setups to obtain 3D images of both phase and absorption. Tomographic images of a test sample are shown, where deflection images revealed details that were invisible in absorption. The findings reported in this paper can be used for the improvement of image reconstruction and for expanding the applications of X-ray phase imaging towards materials characterization and medical imaging.

Dates et versions

hal-04253825 , version 1 (23-10-2023)

Identifiants

Citer

Ginevra Begani Provinciali, Martin Piponnier, Laura Oudjedi, Xavier Levecq, Fabrice Harms, et al.. High-Sensitivity X-ray Phase Imaging System Based on a Hartmann Wavefront Sensor. Condensed Matter, 2022, 7 (1), pp.3. ⟨10.3390/condmat7010003⟩. ⟨hal-04253825⟩

Collections

X CNRS IP_PARIS
7 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More