Phase imaging of irradiated foils at the OMEGA EP facility using phase-stepping X-ray Talbot-Lau deflectometry

0574653 - FZÚ 2024 RIV GB eng J - Journal Article
Perez-Callejo, G. - Bouffetier, V. - Ceurvorst, L. - Goudal, T. - Klein, S.R. - Svyatskiy, D. - Holec, M. - Perez-Martin, P. - Falk, Kateřina - Casner, A. - Weber, T.E. - Kagan, G. - Valdivia, M.P.
Phase imaging of irradiated foils at the OMEGA EP facility using phase-stepping X-ray Talbot-Lau deflectometry.
High Power Laser Science and Engineering. Roč. 11, May (2023), č. článku e49. ISSN 2095-4719. E-ISSN 2052-3289
Institutional support: RVO:68378271
Keywords : deflectometry * OMEGA EP * phase-contrast imaging * Talbot-Lau * X-ray interferometry
OECD category: Optics (including laser optics and quantum optics)
Impact factor: 4.8, year: 2022
Method of publishing: Open access

Diagnosing the evolution of laser-generated high energy density (HED) systems is fundamental to develop a correct understanding of the behavior of matter under extreme conditions. Talbot–Lau interferometry constitutes a promising tool, since it permits simultaneous single-shot X-ray radiography and phase-contrast imaging of dense plasmas. We present the results of an experiment at OMEGA EP that aims to probe the ablation front of a laser-irradiated foil using a Talbot–Lau X-ray interferometer. A polystyrene (CH) foil was irradiated by a laser of 133 J, 1 ns and probed with 8 keV laser-produced backlighter radiation from Cu foils driven by a short-pulse laser (153 J, 11 ps). The ablation front interferograms were processed in combination with a set of reference images obtained ex situ using phase-stepping. These results showcase the capabilities of Talbot–Lau X-ray diagnostic methods to diagnose HED laser-generated plasmas through high-resolution imaging.
Permanent Link: https://hdl.handle.net/11104/0350207