Cryogenic tritium-hydrogen-deuterium and deuterium-tritium layer implosions with high density carbon ablators in near-vacuum hohlraums

被引：64

作者：

Meezan, N. B. ^{[1
]}

Hopkins, L. F. Berzak ^{[1
]}

Le Pape, S. ^{[1
]}

Divol, L. ^{[1
]}

MacKinnon, A. J. ^{[1
]}

Doeppner, T. ^{[1
]}

Ho, D. D. ^{[1
]}

Jones, O. S. ^{[1
]}

Khan, S. F. ^{[1
]}

Ma, T. ^{[1
]}

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

Pak, A. E. ^{[1
]}

Ross, J. S. ^{[1
]}

Thomas, C. A. ^{[1
]}

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

Bradley, D. K. ^{[1
]}

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

Clark, D. S. ^{[1
]}

Field, J. E. ^{[1
]}

Haan, S. W. ^{[1
]}

Izumi, N. ^{[1
]}

Kyrala, G. A. ^{[2
]}

Moody, J. D. ^{[1
]}

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

Ralph, J. E. ^{[1
]}

Rygg, J. R. ^{[1
]}

Sepke, S. M. ^{[1
]}

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

Tommasini, R. ^{[1
]}

Town, R. P. J. ^{[1
]}

Biener, J. ^{[1
]}

Bionta, R. M. ^{[1
]}

Bond, E. J. ^{[1
]}

Caggiano, J. A. ^{[1
]}

Eckart, M. J. ^{[1
]}

Johnson, M. Gatu ^{[3
]}

Grim, G. P. ^{[1
]}

Hamza, A. V. ^{[1
]}

Hartouni, E. P. ^{[1
]}

Hatarik, R. ^{[1
]}

Hoover, D. E. ^{[4
]}

Kilkenny, J. D. ^{[4
]}

Kozioziemski, B. J. ^{[1
]}

Kroll, J. J. ^{[1
]}

McNaney, J. M. ^{[4
]}

Nikroo, A. ^{[4
]}

Sayre, D. B. ^{[1
]}

Stadermann, M. ^{[1
]}

Wild, C. ^{[5
]}

Yoxall, B. E. ^{[1
]}

机构：

[1] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA

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

[3] MIT, Cambridge, MA 02139 USA

[4] Gen Atom Co, San Diego, CA 93286 USA

[5] Diamond Mat GMBH, D-79108 Freiburg, Germany

来源：

PHYSICS OF PLASMAS | 2015年 / 22卷 / 06期

关键词：

D O I：

10.1063/1.4921947

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：

High Density Carbon (or diamond) is a promising ablator material for use in near-vacuum hohl-raums, as its high density allows for ignition designs with laser pulse durations of < 10 ns. A series of Inertial Confinement Fusion (ICF) experiments in 2013 on the National Ignition Facility [Moses et al., Phys. Plasmas 16, 041006 (2009)] culminated in a deuterium-tritium (DT) layered implosion driven by a 6.8 ns, 2-shock laser pulse. This paper describes these experiments and comparisons with ICF design code simulations. Backlit radiography of a tritium-hydrogen-deuterium (THD) layered capsule demonstrated an ablator implosion velocity of 385 km/s with a slightly oblate hot spot shape. Other diagnostics suggested an asymmetric compressed fuel layer. A streak camera-based hot spot self-emission diagnostic (SPIDER) showed a double-peaked history of the capsule self-emission. Simulations suggest that this is a signature of low quality hot spot formation. Changes to the laser pulse and pointing for a subsequent DT implosion resulted in a higher temperature, prolate hot spot and a thermonuclear yield of 1.8 x 10(15) neutrons, 40% of the 1D simulated yield. (C) 2015 AIP Publishing LLC.

引用

页数：12

共 22 条

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