Diagnosing the origin and impact of low-mode asymmetries in ignition experiments at the National Ignition Facility

被引：8

作者：

Casey, D. ^{[1
]}

Macgowan, B. ^{[1
]}

Hurricane, O. ^{[1
]}

Landen, O. ^{[1
]}

Nora, R. ^{[1
]}

Haan, S. ^{[1
]}

Kritcher, A. ^{[1
]}

Zylstra, A. ^{[1
]}

Ralph, J. ^{[1
]}

Dewald, E. ^{[1
]}

Hohenberger, M. ^{[1
]}

Pak, A. ^{[1
]}

Springer, P. ^{[1
]}

Weber, C. ^{[1
]}

Milovich, J. ^{[1
]}

Divol, L. ^{[1
]}

Hartouni, E. ^{[1
]}

Bionta, R. ^{[1
]}

Hahn, K. ^{[1
]}

Schlossberg, D. ^{[1
]}

Moore, A. ^{[1
]}

Johnson, M. Gatu ^{[2
]}

机构：

[1] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA

[2] Massachusetts Inst Technol MIT, Cambridge, MA 02139 USA

来源：

PHYSICAL REVIEW E | 2023年 / 108卷 / 05期

关键词：

Compendex;

D O I：

10.1103/PhysRevE.108.L053203

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：

Inertial confinement fusion ignition requires high inflight shell velocity, good energy coupling between the hotspot and shell, and high areal density at peak compression. Three-dimensional asymmetries caused by imperfections in the drive symmetry or target can grow and damage the coupling and confinement. Recent high-yield experiments have shown that low-mode asymmetries are a key degradation mechanism and contribute to variability. We show the experimental signatures and impacts of asymmetry change with increasing implosion yield given the same initial cause. This letter has implications for improving robustness to a key degradation in ignition experiments.

引用

页数：7

共 50 条

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