Hotspot parameter scaling with velocity and yield for high-adiabat layered implosions at the National Ignition Facility

被引：31

作者：

Baker, K. L. ^{[1
]}

Thomas, C. A. ^{[2
]}

Casey, D. T. ^{[1
]}

Hohenberger, M. ^{[1
]}

Khan, S. ^{[1
]}

Spears, B. K. ^{[1
]}

Landen, O. L. ^{[1
]}

Nora, R. ^{[1
]}

Woods, D. T. ^{[1
]}

Milovich, J. L. ^{[1
]}

Berger, R. L. ^{[1
]}

Strozzi, D. ^{[1
]}

Weber, C. ^{[1
]}

Clark, D. ^{[1
]}

Hurricane, O. A. ^{[1
]}

Callahan, D. A. ^{[1
]}

Kritcher, A. L. ^{[1
]}

Bachmann, B. ^{[1
]}

Benedetti, L. R. ^{[1
]}

Bionta, R. ^{[1
]}

Celliers, P. M. ^{[1
]}

Fittinghoff, D. ^{[1
]}

Goyon, C. ^{[1
]}

Hatarik, R. ^{[1
]}

Izumi, N. ^{[1
]}

Johnson, M. Gatu ^{[3
]}

Kyrala, G. ^{[4
]}

Ma, T. ^{[1
]}

Meaney, K. ^{[4
]}

Millot, M. ^{[1
]}

Nagel, S. R. ^{[1
]}

Patel, P. K. ^{[1
]}

Turnbull, D. ^{[2
]}

Volegov, P. L. ^{[4
]}

Yeamans, C. ^{[1
]}

Wilde, C. ^{[4
]}

机构：

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

[2] Univ Rochester, Lab Laser Energet, Rochester, NY 14623 USA

[3] MIT, 77 Massachusetts Ave, Cambridge, MA 02139 USA

[4] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

来源：

PHYSICAL REVIEW E | 2020年 / 102卷 / 02期

关键词：

FUSION;

D O I：

10.1103/PhysRevE.102.023210

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：

This paper presents a study on hotspot parameters in indirect-drive, inertially confined fusion implosions as they proceed through the self-heating regime. The implosions with increasing nuclear yield reach the burning-plasma regime, hotspot ignition, and finally propagating burn and ignition. These implosions span a wide range of alpha heating from a yield amplification of 1.7-2.5. We show that the hotspot parameters are explicitly dependent on both yield and velocity and that by fitting to both of these quantities the hotspot parameters can be fit with a single power law in velocity. The yield scaling also enables the hotspot parameters extrapolation to higher yields. This is important as various degradation mechanisms can occur on a given implosion at fixed implosion velocity which can have a large impact on both yield and the hotspot parameters. The yield scaling also enables the experimental dependence of the hotspot parameters on yield amplification to be determined. The implosions reported have resulted in the highest yield (1.73 x 10(16) +/- 2.6%), yield amplification, pressure, and implosion velocity yet reported at the National Ignition Facility.

引用

页数：9

共 26 条

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