X-ray imaging of and phase transformation kinetics in shocked Silicon at LCLS

POSTER

Abstract

We report on first results of a new X-ray imaging diagnostic at the Matter in Extreme Conditions endstation at the Linac Cohorent Light source.

The diagnostic uses the sub-100 fs pulse duration of the X-ray beam at photon energies between 6 and 17 keV to obtain real density snapshots of material dynamics under extreme conditions at better than 600 nm spatial resolution and over larger than 100micron field of view.

We have used the diagnostic to image shock waves in single crystal Si, investigating the two elastic waves and the related kinetically inhibited phase transition to Si-V and Si-XI. In addition we see for the first time in situ the banding associated with this phase transition which has been predicted by MD simulation but never been recorded during a shock before.

*Use of the Linac Coherent Light Source (LCLS), SLAC National Accelerator Laboratory, is supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under Contract No. DE-AC02-76SF00515. The MEC instrument is supported by the U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences under contract No. DE-AC02-76SF00515.

Presenters

  • Bob Nagler

    • SLAC - Natl Accelerator Lab
    • SLAC National Accelerator Laboratory

Authors

  • Bob Nagler

    • SLAC - Natl Accelerator Lab
    • SLAC National Accelerator Laboratory

  • Hae Ja Lee

    • SLAC National Accelerator Laboratory
    • Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California, 94025, USA

  • Dimitri Khaghani

    • SLAC National Accelerator Laboratory
    • SLAC - Natl Accelerator Lab
    • SLAC National Accelerator Accelerator

  • Eric Cunningham

    • SLAC National Accelerator Laboratory
    • SLAC - Natl Accelerator Lab

  • Thomas Hatcher

    • SLAC National Accelerator Laboratory

  • Hai-En Tsai

    • SLAC National Accelerator Laboratory
    • SLAC -Natl Accelerator Lab

  • Gilliss Dyer

    • SLAC National Accelerator Laboratory
    • SLAC - Natl Accelerator Lab

  • Arianna Gleason

    • SLAC - Natl Accelerator Lab

  • Silvia Pandolfi

    • SLAC - Natl Accelerator Lab

  • Anne Sakdinawat

    • SLAC National Accelerator Laboratory

  • Yanwei Liu

    • SLAC National Accelerator Laboratory

  • Daniel S Hodge

    • Brigham Young University

  • Richard L Sandberg

    • Brigham Young University

  • Eric Galtier

    • SLAC - Natl Accelerator Lab
    • SLAC National Accelerator Laboratory