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Ultrafast observation of lattice dynamics in laser-irradiated gold foils

  • N. J. Hartley
  • , N. Ozaki
  • , T. Matsuoka
  • , B. Albertazzi
  • , A. Faenov
  • , Y. Fujimoto
  • , H. Habara
  • , M. Harmand
  • , Y. Inubushi
  • , T. Katayama
  • , M. Koenig
  • , A. Krygier
  • , P. Mabey
  • , Y. Matsumura
  • , S. Matsuyama
  • , E. E. McBride
  • , K. Miyanishi
  • , G. Morard
  • , T. Okuchi
  • , T. Pikuz
  • O. Sakata, Y. Sano, T. Sato, T. Sekine, Y. Seto, K. Takahashi, K. A. Tanaka, Y. Tange, T. Togashi, Y. Umeda, T. Vinci, M. Yabashi, T. Yabuuchi, K. Yamauchi, R. Kodama
  • Institute of Radiooncology - OncoRay
  • Osaka University
  • Joint Institute for High Temperatures of the Russian Academy of Sciences
  • CNRS/Museum National d'Histoire Naturelle/IRD/UPMC
  • JASRI/SPring-8
  • University of Oxford
  • Stanford Linear Accelerator Center
  • Okayama University
  • National Institute for Materials Science
  • Hiroshima University
  • Kobe University
  • RIKEN SPring-8 Center

Résultats de recherche: Contribution à un journalArticleRevue par des pairs

Résumé

We have observed the lattice expansion before the onset of compression in an optical-laser-driven target, using diffraction of femtosecond X-ray beams generated by the SPring-8 Angstrom Compact Free-electron Laser. The change in diffraction angle provides a direct measure of the lattice spacing, allowing the density to be calculated with a precision of ±1%. From the known equation of state relations, this allows an estimation of the temperature responsible for the expansion as <1000 K. The subsequent ablation-driven compression was observed with a clear rise in density at later times. This demonstrates the feasibility of studying the dynamics of preheating and shock formation with unprecedented detail.

langue originaleAnglais
Numéro d'article071905
journalApplied Physics Letters
Volume110
Numéro de publication7
Les DOIs
étatPublié - 13 févr. 2017

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