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A feasibility study of using x-ray Thomson scattering to diagnose the in-flight plasma conditions of laser-direct-drive, DT cryogenic implosions

ORAL

Abstract

Development of diagnostic tools capable of validating models used in radiation-hydrodynamic simulations is an important area of research in the pursuit of inertial confinement fusion (ICF) ignition targets. A dual-channel x-ray probe recording spatially integrated, spectrally resolved x-ray Thomson scattering (XRTS) in both the collective and noncollective regime will be presented here as a viable option. This feasibility study investigated synthetic scattering spectra for two extreme target adiabat conditions. The scattering spectra were generated using 1-D implosion simulations from the LILAC code that were post-processed with the x-ray scattering (XRS) code using SPECT3D. Two scattering setups were explored. The synthetic scattering data were post-processed with a Markov-Chain Monte Carlo (MCMC) code and accurate information of the compressed DT shell's density, electron temperature and ionisation was obtained. There was found to be close agreement between the LILAC simulated results and the MCMC analysis. 

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Presenters

  • Hannah Poole

    University of Oxford

Authors

  • Hannah Poole

    University of Oxford

  • Duc M Cao

    Lab for Laser Energetics, Laboratory for Laser Energetics, U. of Rochester, University of Rochester

  • J. Ryan R Rygg

    University of Rochester, Laboratory for Laser Energetics, U. of Rochester

  • Suxing X Hu

    Laboratory for Laser Energetics, University of Rochester, University of Rochester, Laboratory for Laser Energetics, University of Rochester, USA, Laboratory of Laser Energetics, University of Rochester

  • Igor E Golovkin

    Prism Computational Sciences

  • Timothy Walton

    Prism Computational Sciences

  • Reuben Epstein

    University of Rochester, Laboratory for Laser Energetics, U. of Rochester

  • Muhammad F Kasim

    University of Oxford, University of Oxford - Machine Discovery Ltd, Oxford, UK

  • Sam M Vinko

    University of Oxford

  • Gianluca Gregori

    University of Oxford, Department of Physics, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom

  • Sean P Regan

    Laboratory for Laser Energetics, University of Rochester, University of Rochester, Laboratory for Laser Energetics, U. of Rochester, Laboratory for Laser Energetics, Lab for Laser Energetics