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DOE OSTI · 3374426

Burn mode signatures enabled by high dynamic range fusion reaction history

Meaney, Kevin Daniel [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000311427360)·Dwyer, Robert Harrison [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000188312145)·Haines, Brian Michael [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000238897074)·Daughton, William Scott [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000310517559)·Geppert-Kleinrath, Hermann [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:000000029350144X)·Sauppe, Joshua Paul [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000215071595)·Lester, Ryan Stuart [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000245883690)·Schlossberg, D. J. [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)] (ORCID:0000000287139448)·Carrera, J. A. [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)] (ORCID:0000000295614739)·Mariscal, E. [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)] (ORCID:0000000258749984)·Kim, Yong Ho [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000150020964)
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Abstract

The evolution of the fusion burn of a compressed inertial confinement fusion (ICF) implosion gives information about the evolution of the temperature, mass, and volume of the hot spot. Currently, the fusion reaction history has been measured with about a decade of dynamic range, giving information about just the peak of the fusion burn. There are proposals for extending the dynamic range to 1000×, measuring the rising edge of the burn earlier in time. Using fusion hot spot theory and a set of ICF simulations, we identify and categorize different stages of fusion burn and what signatures could be measured. For ice layered implosions, the details, conditions, and dynamics of the fusion burn propagation could be observed. For double shell and OMEGA scale implosions, the evolution of the final compression and rebounding shock before ignition could be observed. Higher dynamic range expands investigation into the logarithmic derivative, α, as a signature of various mechanisms.

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70 PLASMA PHYSICS AND FUSION TECHNOLOGYDeflagrationGamma ray instruments, Thermonuclear fusion, Laser fusion, Fusion experimentsHydrodynamics simulationsIgnitionNuclear science and engineeringPhysics - Nuclear physics and radiation physicsShock dynamicsThermonuclear reaction

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Meaney, Kevin Daniel [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000311427360), Dwyer, Robert Harrison [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000188312145), Haines, Brian Michael [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000238897074), Daughton, William Scott [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000310517559), Geppert-Kleinrath, Hermann [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:000000029350144X), Sauppe, Joshua Paul [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000215071595), Lester, Ryan Stuart [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000245883690), Schlossberg, D. J. [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)] (ORCID:0000000287139448), Carrera, J. A. [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)] (ORCID:0000000295614739), Mariscal, E. [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)] (ORCID:0000000258749984), Kim, Yong Ho [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000150020964). 2026-06-11. Burn mode signatures enabled by high dynamic range fusion reaction history. https://doi.org/10.1063/5.0324190

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