Abstract

Encouraging results have been obtained using a strong first shock during the implosion of carbon-based ablator ignition capsules. These “high-foot” implosion results show that capsule performance deviates from 1D expectations as laser power and energy are increased. A possible cause of this deviation is the disruption of the hot spot by jets originating in the capsule fill tube. Nominally, a 10 μm outside diameter glass (SiO2) fill tube is used in these implosions. Simulations indicate that a thin coating of Au on this glass tube may lessen the hotspot disruption. These results and other mitigation strategies will be presented.

Details

Title
Simulations of fill tube effects on the implosion of high-foot NIF ignition capsules
Author
Dittrich, T R 1 ; Hurricane, O A 1 ; Berzak-Hopkins, L F 1 ; Callahan, D A 1 ; Casey, D T 1 ; Clark, D 1 ; Dewald, E L 1 ; Doeppner, T 1 ; Haan, S W 1 ; Hammel, B A 1 ; Harte, J A 1 ; Hinkel, D E 1 ; Kozioziemski, B J 1 ; Kritcher, A L 1 ; T Ma 1 ; Nikroo, A 1 ; Pak, A E 1 ; Parham, T G 1 ; H-S, Park 1 ; Patel, P K 1 ; Remington, B A 1 ; Salmonson, J D 1 ; Springer, P T 1 ; Weber, C R 1 ; Zimmerman, G B 1 ; Kline, J L 2 

1  Lawrence Livermore National Laboratory, Livermore, CA 94551, USA 
2  Los Alamos National Laboratory, Los Alamos, NM 87545, USA 
Publication year
2016
Publication date
May 2016
Publisher
IOP Publishing
ISSN
17426588
e-ISSN
17426596
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.1088/1742-6596/717/1/012013
ProQuest document ID
2575122113
Copyright
© 2016. This work is published under http://creativecommons.org/licenses/by/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.