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

Journal Article · · Journal of Applied Physics
DOI:https://doi.org/10.1063/1.4935295· OSTI ID:1376040

Megabar (1 Mbar = 100 GPa) laser shocks on precompressed samples allow reaching unprecedented high densities and moderately high ~103–104 K temperatures. We describe in this paper 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. Finally, 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.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Fusion Energy Sciences (FES); USDOE National Nuclear Security Administration (NNSA); LLNL Laboratory Directed Research and Development (LDRD) Program
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
1376040
Report Number(s):
LLNL-JRNL-672121
Journal Information:
Journal of Applied Physics, Vol. 118, Issue 19; ISSN 0021-8979
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 53 works
Citation information provided by
Web of Science

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Cited By (21)

Comparing Jupiter interior structure models to Juno gravity measurements and the role of a dilute core : JUPITER'S INTERIOR STRUCTURE FROM JUNO journal May 2017
Experimental evidence for superionic water ice using shock compression journal February 2018
Jupiter internal structure: the effect of different equations of state journal December 2016
High precision Hugoniot measurements on statically pre-compressed fluid helium journal September 2016
Measurements of the sound velocity of shock-compressed liquid silica to 1100 GPa journal December 2016
Characterizing equation of state and optical properties of dynamically pre-compressed materials journal April 2019
Shock-adiabatic to quasi-isentropic compression of warm dense helium up to 150 GPa journal June 2017
Multiple shock reverberation compression of dense Ne up to the warm dense regime: Evaluating the theoretical models journal April 2018
Thermodynamic properties of MgSiO 3 at super-Earth mantle conditions journal June 2018
Equation of state of boron nitride combining computation, modeling, and experiment journal April 2019
Shock Compression of Liquid Deuterium up to 1 TPa journal June 2019
Insulator-metal transition in dense fluid deuterium journal August 2018
The Properties of Heavy Elements in Giant Planet Envelopes journal September 2016
Size and Strength of Self-excited Dynamos in Jupiter-like Extrasolar Planets journal July 2018
A New Equation of State for Dense Hydrogen–Helium Mixtures journal February 2019
Comparing Jupiter interior structure models to Juno gravity measurements and the role of a dilute core text January 2017
The properties of heavy elements in giant planet envelopes text January 2016
Size and strength of self-excited dynamos in Jupiter-like extrasolar planets text January 2018
A new equation of state for dense hydrogen-helium mixtures text January 2019
Understanding dense hydrogen at planetary conditions journal September 2020
Understanding Jupiter's Interior text January 2016

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