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Title: Probing matter at extreme Gbar pressures at the NIF

Journal Article · · High Energy Density Physics
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  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  3. Atomic Weapons Establishment (AWE), Berkshire (United Kingdom)
  4. Univ. of California, Berkeley, CA (United States)
  5. EMMI, Darmstadt (Germany)

Here we describe a platform to measure the material properties, specifically the equation of state and electron temperature, at pressures of 100 Mbar to a Gbar at the National Ignition Facility (NIF). In our experiments we launch spherically convergent shock waves into solid CH, CD, or diamond samples using a hohlraum radiation drive, in an indirect drive laser geometry. X-ray radiography is applied to measure the shock speed and infer the mass density profile, enabling determination of the material pressure and Hugoniot equation of state. X-ray scattering is applied to measure the electron temperature through probing of the electron velocity distribution via Doppler broadening.

Research Organization:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
1237531
Report Number(s):
LLNL-JRNL-575292
Journal Information:
High Energy Density Physics, Vol. 10; ISSN 1574-1818
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 48 works
Citation information provided by
Web of Science

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Cited By (14)

Spherical strong-shock generation for shock-ignition inertial fusiona) journal May 2015
From microjoules to megajoules and kilobars to gigabars: Probing matter at extreme states of deformation journal September 2015
Resolving hot spot microstructure using x-ray penumbral imaging (invited) journal August 2016
Path integral Monte Carlo simulations of dense carbon-hydrogen plasmas journal March 2018
Absolute Hugoniot measurements for CH foams in the 2–9 Mbar range journal March 2018
Absolute Hugoniot measurements from a spherically convergent shock using x-ray radiography journal May 2018
Understanding the effects of radiative preheat and self-emission from shock heating on equation of state measurement at 100s of Mbar using spherically converging shock waves in a NIF hohlraum journal January 2020
Dynamic electron–ion collisions and nuclear quantum effects in quantum simulation of warm dense matter journal January 2018
Kinetic physics in ICF: present understanding and future directions journal April 2018
X-ray scattering measurements on imploding CH spheres at the National Ignition Facility journal July 2016
First-principles equation of state and shock compression predictions of warm dense hydrocarbons journal July 2017
X-ray penumbral imaging diagnostic developments at the National Ignition Facility
  • Felker, Sean J.; Bachmann, Benjamin; Abu Shawareb, Hatim
  • Target Diagnostics Physics and Engineering for Inertial Confinement Fusion VI https://doi.org/10.1117/12.2274611
conference September 2017
Absolute Hugoniot Measurements for CH Foams in the 2-9 MBAR Range conference June 2018
First-principles Equation of State and Shock Compression Predictions of Warm Dense Hydrocarbons text January 2017