Mining experimental magnetized liner inertial fusion data: Trends in stagnation morphology

Lewis, William E.; Yager-Elorriaga, David A.; Jennings, Christopher A.; Fein, Jeffrey R.; Shipley, Gabriel A.; Porwitzky, Andrew; Awe, Thomas J.; Gomez, Matthew R.; Harding, Eric C.; Harvey-Thompson, Adam J.; Knapp, Patrick F.; Mannion, Owen M.; Ruiz, Daniel E.; Schaeuble, Marc-Andre; Slutz, Stephen A.; Weis, Matthew R.; Woolstrum, Jeffrey; Ampleford, David J.; Shulenburger, Luke

doi:10.1063/5.0206222

Mining experimental magnetized liner inertial fusion data: Trends in stagnation morphology

Journal Article · Mon Aug 26 00:00:00 EDT 2024 · Physics of Plasmas

DOI:https://doi.org/10.1063/5.0206222· OSTI ID:2567944

; ; Jennings, Christopher A.; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ;

In magnetized liner inertial fusion (MagLIF), a cylindrical liner filled with fusion fuel is imploded with the goal of producing a one-dimensional plasma column at thermonuclear conditions. However, structures attributed to three-dimensional effects are observed in self-emission x-ray images. Despite this, the impact of many experimental inputs on the column morphology has not been characterized. We demonstrate the use of a linear regression analysis to explore correlations between morphology and a wide variety of experimental inputs across 57 MagLIF experiments. Results indicate the possibility of several unexplored effects. For example, we demonstrate that increasing the initial magnetic field correlates with improved stability. Although intuitively expected, this has never been quantitatively assessed in integrated MagLIF experiments. We also demonstrate that azimuthal drive asymmetries resulting from the geometry of the “current return can” appear to measurably impact the morphology. In conjunction with several counterintuitive null results, we expect the observed correlations will encourage further experimental, theoretical, and simulation-based studies. Finally, we note that the method used in this work is general and may be applied to explore not only correlations between input conditions and morphology but also with other experimentally measured quantities.

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Sponsoring Organization:: USDOE

Grant/Contract Number:: NONE; NA0003525

OSTI ID:: 2567944

Alternate ID(s):: OSTI ID: 2439907

Journal Information:: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 8 Vol. 31; ISSN 1070-664X

Publisher:: American Institute of PhysicsCopyright Statement

Country of Publication:: United States

Language:: English

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