Effects of a magnetic field on hot electron generation from laser-plasma instabilities

We performed two-dimensional simulations of turbulent laser-plasma instabilities in the presence and absence of external magnetic fields using the Laser Plasma Simulation Environment (LPSE) code. The results demonstrate that, in the presence of a magnetic field, the transition from ballistic to gyrating electron motion enhances the energy transfer from electron plasma waves to the electron population. Although stronger magnetic fields produce a larger population of hot electrons, these electrons tend to remain confined near the quarter-critical density, where the instabilities also localize, thereby reducing the potential for hot electron transport deeper into the target. Additionally, we present a scaling analysis that quantifies hot electron generation as a function of plasma electron temperature, density scale length, and applied magnetic field strength. These findings may have important applications for controlling hot electron flux and mitigating preheat in inertial confinement fusion targets.

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Publication Details

Journal
Physics of Plasmas
Published
2026-02-01
DOI
https://doi.org/10.1063/5.0308625
Primary Topic
Laser-Plasma Interactions and Diagnostics
Type
article
Field-Weighted Citation Impact
0.00

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article

Effects of a magnetic field on hot electron generation from laser-plasma instabilities

R. Florido, M. Bailly-Grandvaux, G. Pérez-Callejo, M. A. Gigosos et al.
Physics of Plasmas
Laser-Plasma Interactions and Diagnostics
article

Effects of a magnetic field on hot electron generation from laser-plasma instabilities

R. Florido, M. Bailly-Grandvaux, G. Pérez-Callejo, M. A. Gigosos, J. J. Santos, F. N. Beg, A. Bordón-Sanchez, M. Caetano de Sousa, E. Rovere, R. K. Follett, F. S. Tsung, B. J. Winjum
article en

Abstract

We performed two-dimensional simulations of turbulent laser-plasma instabilities in the presence and absence of external magnetic fields using the Laser Plasma Simulation Environment (LPSE) code. The results demonstrate that, in the presence of a magnetic field, the transition from ballistic to gyrating electron motion enhances the energy transfer from electron plasma waves to the electron population. Although stronger magnetic fields produce a larger population of hot electrons, these electrons tend to remain confined near the quarter-critical density, where the instabilities also localize, thereby reducing the potential for hot electron transport deeper into the target. Additionally, we present a scaling analysis that quantifies hot electron generation as a function of plasma electron temperature, density scale length, and applied magnetic field strength. These findings may have important applications for controlling hot electron flux and mitigating preheat in inertial confinement fusion targets.

Physics of PlasmasVol. 33(2)
Universidad de Valladolid (ES), Universidad de Las Palmas de Gran Canaria (ES), Centre National de la Recherche Scientifique (FR), Université de Bordeaux (FR), University of California, Los Angeles (US), Commissariat à l'Énergie Atomique et aux Énergies Alternatives (FR), University of California San Diego (US), Energetics (United States) (US), Centre Lasers Intenses et Applications (FR), University of Rochester (US)
U.S. Department of Energy, San Diego Supercomputer Center, EUROfusion, European Commission, Agence Nationale de la Recherche, Ministerio de Ciencia e Innovación, National Nuclear Security Administration, University of California, San Diego
Affordable and clean energy
Openalex Percentile: Top 57%
Laser-Plasma Interactions and Diagnostics
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