Ultrafast observation of lattice dynamics in laser-irradiated gold foils

Hartley, N. J.; Ozaki, N.; Matsuoka, T.; Albertazzi, B.; Faenov, A.; Fujimoto, Y.; Habara, H.; Harmand, M.; Inubushi, Y.; Katayama, T.; Koenig, M.; Krygier, A.; Mabey, P.; Matsumura, Y.; Matsuyama, S.; Mcbride, E. E.; Miyanishi, K.; Morard, G.; Okuchi, T.; Pikuz, T.; Sakata, O.; Sano, Y.; Sato, T.; Sekine, T.; Seto, Y.; Takahashi, K.; Tanaka, K. A.; Tange, Y.; Togashi, T.; Umeda, Y.; Vinci, T.; Yabashi, M.; Yabuuchi, T.; Yamauchi, K.; Kodama, R.

doi:10.1063/1.4976541

Ultrafast observation of lattice dynamics in laser-irradiated gold foils

Hartley, N. J.; Ozaki, N.; Matsuoka, T.; Albertazzi, B.; Faenov, A.; Fujimoto, Y.; Habara, H.; Harmand, M.; Inubushi, Y.; Katayama, T.; Koenig, M.; Krygier, A.; Mabey, P.; Matsumura, Y.; Matsuyama, S.; Mcbride, E. E.; Miyanishi, K.; Morard, G.; Okuchi, T.; Pikuz, T.; Sakata, O.; Sano, Y.; Sato, T.; Sekine, T.; Seto, Y.; Takahashi, K.; Tanaka, K. A.; Tange, Y.; Togashi, T.; Umeda, Y.; Vinci, T.; Yabashi, M.; Yabuuchi, T.; Yamauchi, K.; Kodama, R.

We have observed lattice expansion before the onset of compression in an optical-laser-driven target, using diffraction of femtosecond X-ray beams generated by the SACLA X-ray 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 known equation of state relations this allows 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.

Keywords: XFEL; Diffraction; Laser-matter interaction

Applied Physics Letters 110(2017)7, 071905
DOI: 10.1063/1.4976541
Cited 21 times in Scopus

Permalink: https://www.hzdr.de/publications/Publ-25090