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DOE OSTI · 3013785

Simple analytic fusion hot spot models for 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)·Geppert-Kleinrath, Hermann [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:000000029350144X)·Hoffman, Nelson M. [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:000000030178767X)·Kuczek, John Joseph [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000311229778)·Lester, Ryan Stuart [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000245883690)·Sauppe, J. [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000215071595)·Kim, Y. [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000150020964)
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Abstract

The measured fusion reaction history is a combination of the temporal evolution of the fusion hot spot temperature, mass, and volume. Depending on the mechanism of evolution in inertial confinement fusion implosions—shocks, compression, convergence, mass ablation, ignition—the evolution of the reaction history varies. Here, we derive and catalog a set of simplified inertial confinement fusion hot spot models with analytic solutions to infer the evolution of the fusion reaction history for each mechanism. The models give valuable insight into the meaning and cause of fusion reaction history and nuclear burnwidth measurements.

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70 PLASMA PHYSICS AND FUSION TECHNOLOGYAlpha particlesBremsstrahlungEquations of fluid dynamicsFusion experimentsHydrodynamics simulationsMathematical analysisMathematical theoriesNuclear fusionPlasma confinementRadiation losses

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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), Geppert-Kleinrath, Hermann [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:000000029350144X), Hoffman, Nelson M. [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:000000030178767X), Kuczek, John Joseph [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000311229778), Lester, Ryan Stuart [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000245883690), Sauppe, J. [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000215071595), Kim, Y. [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000150020964). 2025-12-02. Simple analytic fusion hot spot models for fusion reaction history. https://doi.org/10.1063/5.0284406

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