EXAFS measurements of compressed Fe at earth core conditions

POSTER

Abstract

Properties of iron at earth core conditions are of primary interest in geophysics, geochemistry and seismology. These off-Hugoniot states can be created by dynamic multi-shock compression. We have performed EXAFS (extended x-ray absorption fine structure) measurements on Fe up to 3.5Mbar using OMEGA laser. Results of single-shock and multi-shock compression will be presented. Comparison between data and QMD simulations will be discussed.

*work performed under the auspices of US DOE by Lawrence Livermore National Laboratory under Contract DEAC52-07NA27344 and the LDRD program at LLNL.

Authors

  • Rip Collins

  • Tom Boehly

  • Dayne Fratanduono

  • Sebastien Hamel

  • Ryan Rygg

  • Jon Eggert

  • Ray Smith

  • Yuan Ping

    • LLNL

  • Damien Hicks

  • Barukh Yaakobi