Variable convergence liquid layer implosions on the National Ignition Facility

被引：16

作者：

Zylstra, A. B. ^{[1
]}

Yi, S. A. ^{[1
]}

Haines, B. M. ^{[1
]}

Olson, R. E. ^{[1
]}

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

Braun, T. ^{[2
]}

Biener, J. ^{[2
]}

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

Batha, S. H. ^{[1
]}

Hopkins, L. Berzak ^{[2
]}

Bhandarkar, S. ^{[2
]}

Bradley, P. A. ^{[1
]}

Crippen, J. ^{[3
]}

Farrell, M. ^{[3
]}

Fittinghoff, D. ^{[2
]}

Herrmann, H. W. ^{[1
]}

Huang, H. ^{[3
]}

Khan, S. ^{[2
]}

Kong, C. ^{[3
]}

Kozioziemski, B. J. ^{[2
]}

Kyrala, G. A. ^{[1
]}

Ma, T. ^{[2
]}

Meezan, N. B. ^{[2
]}

Merrill, F. ^{[1
]}

Nikroo, A. ^{[2
]}

Peterson, R. R. ^{[1
]}

Rice, N. ^{[3
]}

Sater, J. D. ^{[2
]}

Shah, R. C. ^{[1
,4
]}

Stadermann, M. ^{[2
]}

Volegov, P. ^{[1
]}

Walters, C. ^{[2
]}

Wilson, D. C. ^{[1
]}

机构：

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

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

[3] Gen Atom, San Diego, CA 92186 USA

[4] Lab Laser Energet, Rochester, NY 14623 USA

来源：

PHYSICS OF PLASMAS | 2018年 / 25卷 / 05期

关键词：

CRYOGENIC TARGET; FUSION;

D O I：

10.1063/1.5016349

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：

Liquid layer implosions using the "wetted foam" technique, where the liquid fuel is wicked into a supporting foam, have been recently conducted on the National Ignition Facility for the first time [Olson et al., Phys. Rev. Lett. 117, 245001 (2016)]. We report on a series of wetted foam implosions where the convergence ratio was varied between 12 and 20. Reduced nuclear performance is observed as convergence ratio increases. 2-D radiation-hydrodynamics simulations accurately capture the performance at convergence ratios (CR) similar to 12, but we observe a significant discrepancy at CR similar to 20. This may be due to suppressed hot-spot formation or an anomalous energy loss mechanism. Published by AIP Publishing.

引用

页数：7

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