Advanced analysis of laser-driven pulsed magnetic diffusion based on quantum molecular dynamics simulation

Magnetic diffusion plays an important role in inertial confinement fusion with strong magnetic fields. In this paper, we improve a previous analysis of the generation and diffusion of the magnetic field [Morita et al., Phys. Plasmas 25, 094505 (2018)]. For the generation process, we calculate the te...

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Autores principales:	Hiroki Morita, Tadashi Ogitsu, Frank R. Graziani, Shinsuke Fujioka
Formato:	article
Lenguaje:	EN
Publicado:	AIP Publishing LLC 2021
Materias:	Nuclear and particle physics. Atomic energy. Radioactivity QC770-798
Acceso en línea:	https://doaj.org/article/2d14c9f52e1e4e3485a1377ba987db75
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spelling	oai:doaj.org-article:2d14c9f52e1e4e3485a1377ba987db752021-12-01T18:51:43ZAdvanced analysis of laser-driven pulsed magnetic diffusion based on quantum molecular dynamics simulation2468-080X10.1063/5.0053621https://doaj.org/article/2d14c9f52e1e4e3485a1377ba987db752021-11-01T00:00:00Zhttp://dx.doi.org/10.1063/5.0053621https://doaj.org/toc/2468-080XMagnetic diffusion plays an important role in inertial confinement fusion with strong magnetic fields. In this paper, we improve a previous analysis of the generation and diffusion of the magnetic field [Morita et al., Phys. Plasmas 25, 094505 (2018)]. For the generation process, we calculate the temporal evolution of the coil current using a self-consistent circuit model. The results show that the peak of the calculated magnetic field is delayed by 1.2 ns compared with that of the incident laser pulse. For the diffusion process, we evaluate the electrical conductivity of warm dense gold over a wide temperature range (300 K–100 eV) by combining the Kubo–Greenwood formula based on a quantum molecular dynamics simulation with the modified Spitzer model. Our simulation shows that the maximum magnetic field (530 T) that penetrates the cone is delayed by 2.5 ns compared with the laser peak. This result is consistent with experiments [Sakata et al., Nat. Commun. 9, 3937 (2018)] that showed that applying a strong magnetic field improved the heating efficiency of fusion fuel.Hiroki MoritaTadashi OgitsuFrank R. GrazianiShinsuke FujiokaAIP Publishing LLCarticleNuclear and particle physics. Atomic energy. RadioactivityQC770-798ENMatter and Radiation at Extremes, Vol 6, Iss 6, Pp 065901-065901-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Nuclear and particle physics. Atomic energy. Radioactivity QC770-798
spellingShingle	Nuclear and particle physics. Atomic energy. Radioactivity QC770-798 Hiroki Morita Tadashi Ogitsu Frank R. Graziani Shinsuke Fujioka Advanced analysis of laser-driven pulsed magnetic diffusion based on quantum molecular dynamics simulation
description	Magnetic diffusion plays an important role in inertial confinement fusion with strong magnetic fields. In this paper, we improve a previous analysis of the generation and diffusion of the magnetic field [Morita et al., Phys. Plasmas 25, 094505 (2018)]. For the generation process, we calculate the temporal evolution of the coil current using a self-consistent circuit model. The results show that the peak of the calculated magnetic field is delayed by 1.2 ns compared with that of the incident laser pulse. For the diffusion process, we evaluate the electrical conductivity of warm dense gold over a wide temperature range (300 K–100 eV) by combining the Kubo–Greenwood formula based on a quantum molecular dynamics simulation with the modified Spitzer model. Our simulation shows that the maximum magnetic field (530 T) that penetrates the cone is delayed by 2.5 ns compared with the laser peak. This result is consistent with experiments [Sakata et al., Nat. Commun. 9, 3937 (2018)] that showed that applying a strong magnetic field improved the heating efficiency of fusion fuel.
format	article
author	Hiroki Morita Tadashi Ogitsu Frank R. Graziani Shinsuke Fujioka
author_facet	Hiroki Morita Tadashi Ogitsu Frank R. Graziani Shinsuke Fujioka
author_sort	Hiroki Morita
title	Advanced analysis of laser-driven pulsed magnetic diffusion based on quantum molecular dynamics simulation
title_short	Advanced analysis of laser-driven pulsed magnetic diffusion based on quantum molecular dynamics simulation
title_full	Advanced analysis of laser-driven pulsed magnetic diffusion based on quantum molecular dynamics simulation
title_fullStr	Advanced analysis of laser-driven pulsed magnetic diffusion based on quantum molecular dynamics simulation
title_full_unstemmed	Advanced analysis of laser-driven pulsed magnetic diffusion based on quantum molecular dynamics simulation
title_sort	advanced analysis of laser-driven pulsed magnetic diffusion based on quantum molecular dynamics simulation
publisher	AIP Publishing LLC
publishDate	2021
url	https://doaj.org/article/2d14c9f52e1e4e3485a1377ba987db75
work_keys_str_mv	AT hirokimorita advancedanalysisoflaserdrivenpulsedmagneticdiffusionbasedonquantummoleculardynamicssimulation AT tadashiogitsu advancedanalysisoflaserdrivenpulsedmagneticdiffusionbasedonquantummoleculardynamicssimulation AT frankrgraziani advancedanalysisoflaserdrivenpulsedmagneticdiffusionbasedonquantummoleculardynamicssimulation AT shinsukefujioka advancedanalysisoflaserdrivenpulsedmagneticdiffusionbasedonquantummoleculardynamicssimulation
_version_	1718404682637901824

Advanced analysis of laser-driven pulsed magnetic diffusion based on quantum molecular dynamics simulation

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