How Filamentary Fields Surrounding Implosions Affect Charged Particle Diagnostics

ORAL

Abstract

The spectrum and spatial distribution of energetic charged particles generated by inertial confinement fusion (ICF) implosions encodes information about the hotspot and dense fuel during the time of peak fusion reactions. However, filamentary electric and magnetic fields known to develop in laser ablation plasmas can interfere with charged particle measurements by scattering particles as they pass through the corona of the implosion. In this talk we will present knock-on deuteron images from OMEGA cryogenic implosions with significant distortions and show how these distortions can be explained by particle scattering off of electric and/or magnetic filamentary fields around the target. We will also present efforts to characterize these filamentary fields and discuss their potential impact on other charged particle diagnostics.

*This material is based upon work supported by the Department of Energy [National Nuclear Security Administration] University of Rochester “National Inertial Confinement Fusion Program” under Award Number(s) DE-NA0004144.

–

Publication: Heuer et al. 2025: https://doi.org/10.1063/5.0251899

Presenters

  • Peter V Heuer

    • University of Rochester
    • Laboratory for Laser Energetics (LLE)

Authors

  • Peter V Heuer

    • University of Rochester
    • Laboratory for Laser Energetics (LLE)

  • Jonathan L Peebles

    • Laboratory for Laser Energetics (LLE)

  • Justin H Kunimune

    • Massachusetts Institute of Technology

  • Hans G Rinderknecht

    • Laboratory for Laser Energetics (LLE)
    • University of Rochester

  • Jonathan R Davies

    • University of Rochester

  • Varchas Gopalaswamy

    • Laboratory for Laser Energetics (LLE)

  • Jeffrey Frelier

    • LLE

  • Melody Scott

    • LLE

  • Jayden Roberts

    • Laboratory for Laser Energetics (LLE)

  • R. Bruce Brannon

    • Laboratory for Laser Energetics (LLE)

  • Hannah McClow

    • University of Rochester

  • Ryan Fairbanks

    • University of Rochester Laboratory for Laser Energetics

  • Sean P Regan

    • University of Rochester

  • Johan A Frenje

    • Massachusetts Institute of Technology
    • MIT Plasma Science and Fusion Center

  • Maria Gatu Johnson

    • Massachusetts Institute of Technology
    • MIT Plasma Science and Fusion Center

  • Fredrick H Seguin

    • Massachusetts Institute of Technology

  • Aidan J Crilly

    • Imperial College London

  • Brian D Appelbe

    • Imperial College London

  • Michael Farrell

    • General Atomics

  • Jordan H Stutz

    • General Atomics