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

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

  • G. Pérez-Callejo - , University of Valladolid, Université de Bordeaux (Author)
  • V. Bouffetier - , Université de Bordeaux, European XFEL (Author)
  • L. Ceurvorst - , Université de Bordeaux, University of Rochester (Author)
  • T. Goudal - , Université de Bordeaux, French Alternative Energies and Atomic Energy Commission (CEA) (Author)
  • S. R. Klein - , University of Michigan, Ann Arbor (Author)
  • D. Svyatskiy - , Los Alamos National Laboratory (Author)
  • M. Holec - , Lawrence Livermore National Laboratory (Author)
  • P. Perez-Martin - , Chair of Radiation Physics, Helmholtz-Zentrum Dresden-Rossendorf, TUD Dresden University of Technology (Author)
  • K. Falk - , Helmholtz-Zentrum Dresden-Rossendorf, TUD Dresden University of Technology, Czech Academy of Sciences (Author)
  • A. Casner - , Université de Bordeaux, French Alternative Energies and Atomic Energy Commission (CEA) (Author)
  • T. E. Weber - , Los Alamos National Laboratory (Author)
  • G. Kagan - , Imperial College London (Author)
  • M. P. Valdivia - , Johns Hopkins University, University of California at San Diego (Author)

Abstract

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. We managed to obtain attenuation and phase-shift images of a laser-irradiated foil for electron densities above. These results showcase the capabilities of Talbot-Lau X-ray diagnostic methods to diagnose HED laser-generated plasmas through high-resolution imaging.

Details

Original languageEnglish
Article numbere49
JournalHigh power laser science and engineering
Volume11
Publication statusPublished - 26 May 2023
Peer-reviewedYes

Keywords

Keywords

  • deflectometry, OMEGA EP, phase-contrast imaging, Talbot-Lau, X-ray interferometry