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

被引：0
作者：
Chen, Z. H. [1 ]
Yang, X. H. [1 ,2 ]
Zhang, G. B. [1 ]
Ma, Y. Y. [2 ,3 ]
Yan, R. [2 ,4 ]
Xu, H. [1 ,2 ]
Sheng, Z. M. [2 ,5 ,6 ]
Shao, F. Q. [1 ]
Zhang, J. [2 ,5 ,6 ]
机构：
[1] Natl Univ Def Technol, Coll Sci, Changsha 410073, Peoples R China
[2] Shanghai Jiao Tong Univ, Collaborat Innovat Ctr IFSA, Shanghai 200240, Peoples R China
[3] Natl Univ Def Technol, Coll Adv Interdisciplinary Studies, Changsha 410073, Peoples R China
[4] Univ Sci & Technol China, Dept Modern Mech, Hefei 230026, Peoples R China
[5] Shanghai Jiao Tong Univ, Key Lab Laser Plasmas MOE, Shanghai 200240, Peoples R China
[6] Sch Phys & Astron, Shanghai Jiao TongUnivers, Shanghai 200240, Peoples R China
来源：
NUCLEAR FUSION | 2024年 / 64卷 / 12期
基金：
中国国家自然科学基金;
关键词：
inertial confinement fusion; electron nonlocal transport; ablative rayleigh-taylor instability; CONSISTENT STABILITY ANALYSIS; HYDRODYNAMIC INSTABILITY; GROWTH-RATES; FRONTS; MODEL; STABILIZATION;
D O I：
10.1088/1741-4326/ad7f6d
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
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.
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页数：9
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