Article Dans Une Revue Plasma Physics and Controlled Fusion Année : 2025

Electron heat transport in a proton-electron system for various coupling regimes using Particle-In-Cell and classical Molecular Dynamics methods

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Non-equilibrium Molecular Dynamics (NEMD) and Particle-In-Cell (PIC) simulations are employed to estimate the electron thermal conductivity in a Two-Component Plasma (TCP) consisting of electrons and protons. Simulations are performed over a range of Coulomb coupling parameters 0.02 ≤ Γ ≤ 2. For weakly coupled regimes (Γ < 0.1), the results show good agreement with the Landau-Spitzer and Lee-More models. A comparison with the One-Component Plasma (OCP), in which electrons are mobile and protons form a neutralizing background, reveals a systematic decrease of the electron thermal conductivity in the TCP. This reduction highlights the impact of ion interactions on electron heat transport.

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hal-05379521 , version 1 (25-11-2025)

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Daniel Guerroudj, Arnaud Debayle, Annette Calisti, Paul-Edouard Masson-Laborde, Joel Rosato, et al.. Electron heat transport in a proton-electron system for various coupling regimes using Particle-In-Cell and classical Molecular Dynamics methods. Plasma Physics and Controlled Fusion, 2025, Proceedings of the 20th Direct-Drive and Fast Ignition Workshop, Darmstadt 19-22 May 2025, 67 (11), pp.115032. ⟨10.1088/1361-6587/ae1da7⟩. ⟨hal-05379521⟩
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