Constraining computational modeling of indirect drive double shell capsule implosions using experiments

Haines, Brian Michael; Sauppe, Joshua Paul; Keiter, Paul Arthur; Loomis, Eric Nicholas; Morrow, Tana; Montgomery, David; Kuettner, Lindsey Ann; Patterson, Brian M.; Quintana, Theresa E.; Field, J.; Millot, M.; Celliers, P.; Wilson, Douglas Carl; Robey, Harry F. III; Sacks, Ryan Foster; Stark, David James; Krauland, C.; Rubery, M. S.

doi:10.1063/5.0040290

Constraining computational modeling of indirect drive double shell capsule implosions using experiments

Journal Article · Wed Mar 17 00:00:00 EDT 2021 · Physics of Plasmas

DOI:https://doi.org/10.1063/5.0040290· OSTI ID:1783534

^[1]; ^[1]; ^[1]; ^[1]; ^[1]; ^[1]; ^[1]; ^[1]; Quintana, Theresa E. ^[1]; Field, J. ^[2]; Millot, M. ^[2]; Celliers, P. ^[2]; Wilson, Douglas Carl ^[1]; ^[1]; ^[1]; ^[1]; Krauland, C. ^[3]; Rubery, M. S. ^[2]

Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
General Atomics, San Diego, CA (United States)

Double shell capsule implosions are an alternative approach to achieving alpha heating on the National Ignition Facility. Current machining techniques construct the outer shell as two hemispheres that are glued together, and the deuterium and tritium (DT) liquid inside the inner shell will be injected by a fill tube. These features introduce asymmetries and jetting that may disrupt the confinement of the DT fuel if not carefully controlled. Simulations indicate that in order to achieve high yields in the laboratory, these features as well as susceptibility to the Rayleigh–Taylor instability (RTI) must be mitigated. Furthermore, due to uncertainties in computational models and the expense of using the best physics models at adequate resolution in three dimensions, our computational modeling must be constrained by experiments. We report on the results of recent hydrogrowth radiography and dual-axis keyhole experiments with double shell targets that have been used to evaluate our modeling of the outer shell joint as well as the impacts of high-energy x-ray preheat that strongly impacts RTI growth. Our simulations show good agreement with the experimental data and inform several important modeling choices.

View Accepted Manuscript (DOE)

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

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

Grant/Contract Number:: 89233119CNA000063; 89233218CNA000001; AC52-07NA27344

OSTI ID:: 1783534

Alternate ID(s):: OSTI ID: 1771249

Report Number(s):: LA-UR--20-29933

Journal Information:: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 3 Vol. 28; ISSN 1070-664X

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Journal Article · Thu Oct 10 20:00:00 EDT 2019 · Physics of Plasmas · OSTI ID:1601405

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Conference · Mon May 06 00:00:00 EDT 1996 · OSTI ID:244466

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70 PLASMA PHYSICS AND FUSION TECHNOLOGY
computational models
flow instabilities
high-energy x-rays
hydrodynamics simulations
interferometry
radiography
thermodynamic states and processes

Constraining computational modeling of indirect drive double shell capsule implosions using experiments

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