Measurements of the sound speed in a shock-compressed material have long been sought because they provide important information about the thermodynamic derivative in the equation of state of that material at high pressure. Specifically, constraining the sound speed in iron at high pressures can be useful to planetary science and geophysics to understand core formation and dynamo physics. We present measurements of shock‑compressed iron sound speed to pressures of 400 to 2500 GPa using a novel nonsteady wave-analysis technique[1] to infer sound speed from the relative arrival times of pressure perturbations that transited the shocked iron and an adjacent reference material. This material is based upon work supported by the Department of Energy National Nuclear Security Administration under Award Number DE-NA0001944.
[1] D. E. Fratanduono et al., J. Appl. Phys. 116, 033517 (2014).
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Presenters
Margaret Huff
Univ of Rochester
University of Rochester, Laboratory for Laser Energetics
Authors
Margaret Huff
Univ of Rochester
University of Rochester, Laboratory for Laser Energetics
D E Fratanduono
Lawrence Livermore Natl Lab
Chad A McCoy
Sandia Natl Labs
Peter M Celliers
Lawrence Livermore Natl Lab
Lawrence Livermore National Lab
Lawrence Livermore National Laboratory
Lawrence Livermore National Laboratory, Livermore, California
L. E Crandall
Univ of Rochester
Laboratory for Laser Energetics, U. of Rochester
Brian Joseph Henderson
Univ of Rochester
University of Rochester, LLE
Laboratory for Laser Energetics, U. of Rochester
Mohamed Zaghoo
Univ of Rochester
University of Rochester, LLE
Laboratory for Laser Energetics
Laboratory for Laser Energetics, U. of Rochester
J H Henry Eggert
Lawrence Livermore Natl Lab
Gilbert W Collins
University of Rochester, Departments of Mechanical Engineering, Physics and Astronomy, and Laboratory for Laser Energetics
Laboratory for Laser Energetics
Univ of Rochester
Laboratory for Laser Energetics, U. of Rochester
Univ of Rochester, Laboratory for Laser Energetics
University of Rochester
University of Rochester, Laboratory for Laser Energetics
James Ryan Rygg
Laboratory for Laser Energetics
Univ of Rochester
Laboratory for Laser Energetics, U. of Rochester
University of Rochester
University of Rochester, Laboratory for Laser Energetics
