Characterization of the ultrafast x-ray heating of iron foils

ORAL

Abstract

We present experimental data showing the thermodynamic response of metal foils to intense x-ray irradiation. Thin (300 nm) iron foils were irradiated with up to 3 mJ of x-rays in a 9 keV, 40 fs free electron laser pulse generated by the Linac Coherent Light Source, Stanford University. The x-rays heat the foil uniformly, depositing several keV/atom to create a hot-dense state. We observed the non-collective x-ray scattering from the laser pulse, obtaining wavelength-resolved spectra that are sensitive to the temperature and charge distribution in the sample. The values inferred from the x-ray scattering are compared to predictions from atomic kinetics simulations as well as time-integrated measurements of the temperature from the soft x-ray bremsstrahlung emission.

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Authors

  • Eliseo Gamboa

    SLAC National Accelerator Laboratory

  • Guillaume Loisel

    Sandia National Laboratories, New Mexico, USA, Sandia National Laboratories, Sandia National Laboratory

  • Philip Heimann

    SLAC National Accelerator Laboratory

  • J Bailey

    Sandia National Laboratories, Sandia National Laboratory

  • Roger Falcone

    University of California, Berkeley

  • Eric Galtier

    SLAC National Accelerator Laboratory, SLAC - Natl Accelerator Lab

  • Siegfried Glenzer

    SLAC National Accelerator Laboratory, SLAC - Natl Accelerator Lab, Stanford University

  • Andy MacKinnon

    slac, SLAC National Accelerator Laboratory

  • R Mancini

    University of Nevada, Reno, University of Nevada, University Nevada Reno

  • Alison Saunders

    University of California, Berkeley

  • Stephanie Hansen

    Sandia Natl Labs, Sandia National Laboratory, Sandia National Laboratories, SNL