Role of nonlocal heat transport on the laser ablative Rayleigh-Taylor instability

Z.H. Chen; X.H. Yang; G.B. Zhang; Y.Y. Ma; R. Yan; H. Xu; Z.M. Sheng; F.Q. Shao; J. Zhang

doi:10.1088/1741-4326/ad7f6d

Nuclear Fusion (Jan 2024)

Role of nonlocal heat transport on the laser ablative Rayleigh-Taylor instability

Z.H. Chen,
X.H. Yang,
G.B. Zhang,
Y.Y. Ma,
R. Yan,
H. Xu,
Z.M. Sheng,
F.Q. Shao,
J. Zhang

Affiliations

Z.H. Chen: ORCiD; College of Science, National University of Defense Technology , 410073 Changsha, China
X.H. Yang: ORCiD; College of Science, National University of Defense Technology , 410073 Changsha, China; Collaborative Innovation Centre of IFSA, Shanghai Jiao Tong University , 200240 Shanghai, China
G.B. Zhang: ORCiD; College of Science, National University of Defense Technology , 410073 Changsha, China
Y.Y. Ma: Collaborative Innovation Centre of IFSA, Shanghai Jiao Tong University , 200240 Shanghai, China; College of Advanced Interdisciplinary Studies, National University of Defense Technology , 410073 Changsha, China
R. Yan: Collaborative Innovation Centre of IFSA, Shanghai Jiao Tong University , 200240 Shanghai, China; Department of Modern Mechanics, University of Science and Technology of China , 230026 Hefei, China
H. Xu: College of Science, National University of Defense Technology , 410073 Changsha, China; Collaborative Innovation Centre of IFSA, Shanghai Jiao Tong University , 200240 Shanghai, China
Z.M. Sheng: ORCiD; Collaborative Innovation Centre of IFSA, Shanghai Jiao Tong University , 200240 Shanghai, China; Key Laboratory for Laser Plasmas (MOE) and School of Physics and Astronomy, Shanghai Jiao Tong University , Shanghai 200240, China
F.Q. Shao: College of Science, National University of Defense Technology , 410073 Changsha, China
J. Zhang: Collaborative Innovation Centre of IFSA, Shanghai Jiao Tong University , 200240 Shanghai, China; Key Laboratory for Laser Plasmas (MOE) and School of Physics and Astronomy, Shanghai Jiao Tong University , Shanghai 200240, China

DOI: https://doi.org/10.1088/1741-4326/ad7f6d
Journal volume & issue: Vol. 64, no. 12
p. 126029

Abstract

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Ablative Rayleigh–Taylor instability (ARTI) and nonlocal heat transport are the critical problems in laser-driven inertial confinement fusion, while their coupling with each other is not completely understood yet. Here the ARTI in the presence of nonlocal heat transport is studied self-consistently for the first time theoretically and by using radiation hydrodynamic simulations. It is found that the nonlocal heat flux generated by the hot electron transport tends to attenuate the growth of instability, especially for short wavelength perturbations. A linear theory of the ARTI coupled with the nonlocal heat flux is developed, and a prominent stabilization of the ablation front via the nonlocal heat flux is found, in good agreement with numerical simulations. This effect becomes more significant as the laser intensity increases. Our results should have important references for the target designing for inertial confinement fusion.

Published in Nuclear Fusion

ISSN: 0029-5515 (Print); 1741-4326 (Online)
Publisher: IOP Publishing
Country of publisher: United Kingdom
LCC subjects: Science: Physics: Nuclear and particle physics. Atomic energy. Radioactivity
Website: https://iopscience.iop.org/journal/0029-5515

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