Ultrafast short-range disordering of femtosecond-laser-heated warm dense aluminum - Archive ouverte HAL Access content directly
Journal Articles Physical Review Letters Year : 2013

Ultrafast short-range disordering of femtosecond-laser-heated warm dense aluminum

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A. Levy
B. Chimier
C. Goyon
  • Function : Author
S. Hulin
  • Function : Author
P. Combis
  • Function : Author
V. Recoules
L. Videau
  • Function : Author

Abstract

We have probed, with time-resolved x-ray absorption near-edge spectroscopy (XANES), a femtosecond-laser-heated aluminum foil with fluences up to 1 J/cm2. The spectra reveal a loss of the short-range order in a few picoseconds. This time scale is compared with the electron-ion equilibration time, calculated with a two-temperature model. Hydrodynamic simulations shed light on complex features that affect the foil dynamics, including progressive density change from solid to liquid (∼10 ps). In this density range, quantum molecular dynamics simulations indicate that XANES is a relevant probe of the ionic temperature.
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Dates and versions

hal-01561843 , version 1 (25-03-2022)

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Attribution - CC BY 4.0

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P. M. Leguay, A. Levy, B. Chimier, F. Deneuville, D. Descamps, et al.. Ultrafast short-range disordering of femtosecond-laser-heated warm dense aluminum. Physical Review Letters, 2013, 111 (24), ⟨10.1103/PhysRevLett.111.245004⟩. ⟨hal-01561843⟩
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