Generating uniform, non-equilibrium, mid- to high-Z plasmas for radiative properties studies at the Omega laser facility
Abstract
Recent experiments and theoretical work are focused on improving our non-local thermodynamic equilibrium (NLTE) atomic models, important for understanding intense laser-heated plasma such as those found in inertial confinement fusion (ICF) hohlraums and high-energy-density (HED) experiments. These hot (multi-keV), highly ionized plasmas, require complex NLTE atomic physics modeling to predict the radiation emission and transport. A laser-heated, buried-layer target platform on the Omega laser facility is being developed for the purposes of benchmarking our atomic physics models - plasma density and temperature uniformity of the mid- to high-Z buried-layer are critical to this work. We describe our radiation-hydrodynamic simulations used to understand the spatial and temporal evolution of the density, temperature and x-ray emission. Comparisons with Omega data along with designs to push the platform to more extreme conditions on the National Ignition Facility will be presented.
This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344.- Publication:
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APS Division of Plasma Physics Meeting Abstracts
- Pub Date:
- October 2017
- Bibcode:
- 2017APS..DPPY11014K