Predicting hot electron generation in inertial confinement fusion with particle-in-cell simulations

A series of two-dimensional particle-in-cell simulations with speckled laser drivers was carried out to study hot electron generation in direct-drive inertial confinement fusion on OMEGA. Scaling laws were obtained for hot electron fraction and temperature as functions of laser/plasma conditions in...

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Published inPhysical review. E Vol. 106; no. 5-2; p. 055214
Main Authors Cao, S H, Patel, D, Lees, A, Stoeckl, C, Rosenberg, M J, Gopalaswamy, V, Wen, H, Huang, H, Shvydky, A, Betti, R, Ren, C
Format Journal Article
LanguageEnglish
Published United States 01.11.2022
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Summary:A series of two-dimensional particle-in-cell simulations with speckled laser drivers was carried out to study hot electron generation in direct-drive inertial confinement fusion on OMEGA. Scaling laws were obtained for hot electron fraction and temperature as functions of laser/plasma conditions in the quarter-critical region. Using these scalings and conditions from hydro simulations, the temporal history of hot electron generation can be predicted. The scalings can be further improved to predict hard x-rays for a collection of OMEGA warm target implosions within experimental error bars. These scalings can be readily implemented into inertial confinement fusion design codes.
ISSN:2470-0053
DOI:10.1103/PhysRevE.106.055214