Inferring the temperature profile of the radiative shock in the COAX experiment with shock radiography, Dante, and spectral temperature diagnostics

Coffing, Shane X.; Fryer, Chris L.; Robey, Harry F.; Fontes, Christopher J.; Wood, Suzannah R.; Kozlowski, Pawel M.; Johns, Heather M.; Meyerhofer, D. D.; Byvank, T.; Liao, Andy; Urbatsch, Todd J.

doi:10.1063/5.0081167

Inferring the temperature profile of the radiative shock in the COAX experiment with shock radiography, Dante, and spectral temperature diagnostics

Journal Article · Tue Aug 23 00:00:00 EDT 2022 · Physics of Plasmas

DOI:https://doi.org/10.1063/5.0081167· OSTI ID:2567837

; ; Robey, Harry F.; ; ; ; ; ; ; Liao, Andy;

Predicting and modeling the behavior of experiments with radiation waves propagating through low-density foams require a detailed quantification of the numerous uncertainties present. In regimes where a prominent radiative shock is produced, key dynamical features include the shock position, temperature, and curvature and the spatial distribution and temperature of the corresponding supersonic radiation wave. The COAX experimental platform is designed to constrain numerical models of such a radiative shock propagating through a low-density foam by employing radiography for spatial and shock information, Dante for characterizing the x-ray flux from the indirectly driven target, and a novel spectral diagnostic designed to probe the temperature profile of the wave. In this work, we model COAX with parameterized 2D simulations and a Hohlraum-laser modeling package to study uncertainties in diagnosing the experiment. The inferred temperature profile of the COAX radiation transport experiments has been shown to differ from simulations more than expected from drive uncertainties that have been constrained by simultaneous soft x-ray flux and radiography measurements.

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Research Organization:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: USDOE; USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: 89233218CNA000001

OSTI ID:: 2567837

Alternate ID(s):: OSTI ID: 1893674

Report Number(s):: LA-UR-21-31649; 083302

Journal Information:: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 8 Vol. 29; ISSN 1070-664X

Publisher:: American Institute of PhysicsCopyright Statement

Country of Publication:: United States

Language:: English

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