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.

*The work presented here was carried out at the Linac Coherent Light Source (LCLS), a national user facility operated by Stanford University for the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-7

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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