COAX: A Temperature Profile Diagnostic for Radiation Waves on OMEGA-60

ORAL

Abstract

We have developed COAX [1] to provide spatial temperature profiles of a radiation wave through low density foams as a more detailed constraint for simulations than breakout measurements provide [2]. The COAX platform uses a halfraum to drive radiation down a titanium-laden silicon oxide foam at OMEGA-60 [1,3]. Point-projection X-ray absorption spectroscopy, for temperature, is paired with radiography to capture the developing shock as radiation flow becomes subsonic. Spectroscopic analysis of COAX data determines temperature by comparison to synthetic spectra post-processed from radiation-hydrodynamics simulations [2], with \underline {}$+$22.4$\mu $m spatial resolution and temperature uncertainty of \underline {}$+$ 4-8 eV. \begin{enumerate} \item H. M. Johns, C. L. Fryer, S. R. Wood, et al, submitted to HEDP \item C. Fryer, A. Hungerford, J. Kline, et al, HEDP, \textbf{35}, 2020, 100738 \item D. Capelli, C. A. Charsley-Groffman, R. B. Randolph, High Power Laser Sci. \textbf{5}, (2017) \end{enumerate}

* Work performed under the auspices of the U.S. Department of Energy by the Triad National Security, LLC Los Alamos National Laboratory for the DOEs National Nuclear Security Administration (Contract No. 89233218CNA000001).

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Authors

  • H.M. Johns

    Los Alamos National Laboratory, Los Alamos Natl Lab, LANL

  • P. Kozlowski

    Los Alamos National Laboratory, Los Alamos Natl Lab

  • S. R. Wood

    Los Alamos National Laboratory, Los Alamos Natl Lab

  • C. Fryer

    Los Alamos Natl Lab

  • Andy Liao

    Los Alamos National Laboratory, Los Alamos Natl Lab

  • T. S. Perry

    Los Alamos Natl Lab

  • H. F. Robey

    LANL, Los Alamos National Laboratory, Los Alamos Natl Lab

  • C. J. Fontes

    Los Alamos Natl Lab

  • S. Coffing

    Los Alamos National Laboratory, Los Alamos Natl Lab

  • D.W. Schmidt

    Los Alamos Natl Lab, LANL, Los Alamos National Laboratory

  • T. Cardenas

    Los Alamos Natl Lab, Los Alamos National Laboratory

  • TJ Urbatsch

    Los Alamos National Laboratory, Los Alamos Natl Lab, Los Alamos Natl Laboratory, LANL, Los Alamos Natl. Lab

  • C. R. D. Brown

    Atomic Weapons Establishment, AWE

  • J. W. Morton

    Atomic Weapons Establishment, AWE