DOE OSTI · 3387193
Weibel-mediated filamentary structures observed in the ICF context
Abstract
Here, in light of novel and past experimental results, we demonstrate how Weibel-mediated filamentary structures can develop in the expanding plasma plume of a laser-irradiated foil. The transverse ballistic cooling that occurs during the quasi-spherical plasma expansion naturally drives an electron pressure anisotropy, resulting in the growth of electron current filaments. This effect competes with electron–ion Coulomb collisions, which tend to isotropize the electron distribution function. Based on theoretical and particle-in-cell modeling, we provide estimates of the dominant wavelength and amplitude of the self-generated magnetic fluctuations, which are found to explain experimental data obtained at the OMEGA and Laser Megajoule facilities.
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Ruyer, Charles [Alternative Energies and Atomic Energy Commission (CEA), Arpajon (France); Univ. Paris-Saclay (France)] (ORCID:0000000199441372), Bolaños, S. [Univ. of California, San Diego, CA (United States); General Atomics, San Diego, CA (United States)] (ORCID:0000000292341210), Masson Laborde, P. E. [Alternative Energies and Atomic Energy Commission (CEA), Arpajon (France); Univ. Paris-Saclay (France)] (ORCID:0000000327869382), Gremillet, L. [Alternative Energies and Atomic Energy Commission (CEA), Arpajon (France); Univ. Paris-Saclay (France)] (ORCID:0000000301165248), Blanchot, N. [Alternative Energies and Atomic Energy Commission (CEA), Arpajon (France)] (ORCID:000900069391163X), Boutoux, G. [Alternative Energies and Atomic Energy Commission (CEA), Arpajon (France); Univ. Paris-Saclay (France)], Cayzac, W. [Alternative Energies and Atomic Energy Commission (CEA), Arpajon (France)] (ORCID:0000000196821636), Courtois, C. [Alternative Energies and Atomic Energy Commission (CEA), Arpajon (France)] (ORCID:0000000318799175), Dannhoff, S. G. [Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)] (ORCID:0000000215806299), Denis, V. [Alternative Energies and Atomic Energy Commission (CEA), Arpajon (France)], Le Deroff, L. [Alternative Energies and Atomic Energy Commission (CEA), Arpajon (France)] (ORCID:0000000199145805), Li, C. K. [Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)] (ORCID:0000000269194881), Fuchs, J. [Sorbonne Univ., Paris (France); Ecole Polytechnique, Palaiseau (France); Centre National de la Recherche Scientifique (CNRS) (France); Alternative Energies and Atomic Energy Commission (CEA) (France)] (ORCID:0000000197650787), Grisollet, A. [Alternative Energies and Atomic Energy Commission (CEA), Arpajon (France)], Lantuéjoul, I. [Alternative Energies and Atomic Energy Commission (CEA), Arpajon (France)] (ORCID:0009000497002084), Riquier, R. [Alternative Energies and Atomic Energy Commission (CEA), Arpajon (France)] (ORCID:0000000168497592), Smets, R. [Sorbonne Univ., Paris (France); Ecole Polytechnique (France); Centre National de la Recherche Scientifique (CNRS) (France)] (ORCID:0000000253006882), Sutcliffe, Graeme D. [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)] (ORCID:0000000234988040), Vauzour, B. [Alternative Energies and Atomic Energy Commission (CEA), Arpajon (France)] (ORCID:0009000747961377). 2026-05-18. Weibel-mediated filamentary structures observed in the ICF context. https://doi.org/10.1063/5.0321057
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