Skip to main content
eScholarship
Open Access Publications from the University of California

Analysis of laser shock experiments on precompressed samples using a quartz reference and application to warm dense hydrogen and helium

  • Author(s): Brygoo, S
  • Millot, M
  • Loubeyre, P
  • Lazicki, AE
  • Hamel, S
  • Qi, T
  • Celliers, PM
  • Coppari, F
  • Eggert, JH
  • Fratanduono, DE
  • Hicks, DG
  • Rygg, JR
  • Smith, RF
  • Swift, DC
  • Collins, GW
  • Jeanloz, R
  • et al.

Published Web Location

https://doi.org/10.1063/1.4935295
Abstract

© 2015 AIP Publishing LLC. Megabar (1 Mbar = 100 GPa) laser shocks on precompressed samples allow reaching unprecedented high densities and moderately high ∼103-104K temperatures. We describe here a complete analysis framework for the velocimetry (VISAR) and pyrometry (SOP) data produced in these experiments. Since the precompression increases the initial density of both the sample of interest and the quartz reference for pressure-density, reflectivity, and temperature measurements, we describe analytical corrections based on available experimental data on warm dense silica and density-functional-theory based molecular dynamics computer simulations. Using our improved analysis framework, we report a re-analysis of previously published data on warm dense hydrogen and helium, compare the newly inferred pressure, density, and temperature data with most advanced equation of state models and provide updated reflectivity values.

Many UC-authored scholarly publications are freely available on this site because of the UC Academic Senate's Open Access Policy. Let us know how this access is important for you.

Main Content
Current View