Investigation of Nonlocal Electron Transport in High-Energy-Density Plasmas Using Ab Initio Methods
ORAL
Abstract
Nonlocal electron transport is key to determining laser-target coupling for direct-drive inertial confinement fusion (ICF). We have utilized a combination of the mixed Kohn–Sham (mKS)[1,2] and orbital-free (OF)[3] approaches to time-dependent density functional theory (TD-DFT) and various analytical methods to calculate the nonlocal electron mean free path (MFP) in warm/hot dense CH “conduction-zone” plasmas relevant to ICF conditions. We will use the results from these TD-mKS-DFT and TD-OF-DFT calculations to develop an analytical model for the electron MFP and then apply this model to radiation-hydrodynamic simulations of ICF implosions. In this way, we hope to close the gap between theory and experiment for laser–target coupling that is currently evidenced by soft x-ray self-emission measurements. The expected results will improve the predictive capability for laser–target coupling, hot-spot formation, and burn-wave propagation in ICF simulations.
[1] A. J. White et al., Phys. Rev. Lett. 125, 055002 (2020).
[2] A. J. White et al., J. Phys.: Condens. Matter 34, 174001 (2022).
[3] Y. H. Ding et al., Phys. Rev. Lett. 121, 145001 (2018).
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Presenters
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Katarina A Nichols
Laboratory for Laser Energetics, University of Rochester, University of Rochester
Authors
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Katarina A Nichols
Laboratory for Laser Energetics, University of Rochester, University of Rochester
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Alexander J White
Los Alamos Natl Lab
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Lee A Collins
Los Alamos Natl Lab, Los Alamos National Laboratory
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Suxing Hu
Laboratory for Laser Energetics, University of Rochester, LLE, University of Rochester, Lab. for Laser Energetics, U. of Rochester